Refactor UML module selection UI and enhance schema mappings across various YAML files

- Updated the generated timestamp in the LinkML manifest file.
- Added new CSS styles for schema status and warning indicators in MappingExplorer.
- Implemented schema validation logic in MappingExplorer to check field validity against the loaded LinkML schema.
- Enhanced the UI to display schema status and warnings for invalid fields in the mapping interface.
- Refactored field details panel to show schema validity messages for target classes and slots.
- Updated various target classes and slots in custodian data mappings for consistency and accuracy.

frontend/package.json

@@ -6,8 +6,9 @@
   "scripts": {
     "sync-schemas": "rsync -av --delete --exclude=\"archive/\" ../schemas/20251121/linkml/ public/schemas/20251121/linkml/",
     "generate-manifest": "node scripts/generate-schema-manifest.cjs",
-    "dev": "pnpm run sync-schemas && pnpm run generate-manifest && vite",
+    "generate-uml": "node scripts/generate-ontology-uml.cjs",
-    "build": "pnpm run sync-schemas && pnpm run generate-manifest && tsc -b && vite build",
+    "dev": "pnpm run sync-schemas && pnpm run generate-manifest && pnpm run generate-uml && vite",
+    "build": "pnpm run sync-schemas && pnpm run generate-manifest && pnpm run generate-uml && tsc -b && vite build",
     "lint": "eslint .",
     "preview": "vite preview",
     "test": "vitest",

frontend/public/schemas/20251121/linkml/archive/refactored/StaffRoles_monolithic_20260108.yaml

@@ -16,7 +16,7 @@ imports:
 classes:
   Curator:
     is_a: StaffRole
-    class_uri: schema:curator
+    class_uri: hc:Curator
     description: |
       Curator responsible for collections research, acquisition, and exhibitions.
 
@@ -41,8 +41,7 @@ classes:
       - Object interpretation and labeling
       - Loan negotiations
     exact_mappings:
-  - schema:curator
+    - wikidata:Q674426
-  - wikidata:Q674426
     slot_usage:
       role_category:
         ifabsent: string(CURATORIAL)
@@ -53,8 +52,8 @@ classes:
         range: TemplateSpecificityScores
         inlined: true
     slots:
-  - specificity_annotation
+    - specificity_annotation
-  - template_specificity
+    - template_specificity
   CollectionsManager:
     is_a: StaffRole
     description: |
@@ -80,7 +79,7 @@ classes:
       - Rights and reproductions
       - Insurance and valuation coordination
     exact_mappings:
-  - wikidata:Q65963513
+    - wikidata:Q65963513
     slot_usage:
       role_category:
         ifabsent: string(CURATORIAL)
@@ -91,8 +90,8 @@ classes:
         range: TemplateSpecificityScores
         inlined: true
     slots:
-  - specificity_annotation
+    - specificity_annotation
-  - template_specificity
+    - template_specificity
   Conservator:
     is_a: StaffRole
     description: |

frontend/public/schemas/20251121/linkml/classes/BirthPlace.yaml

@@ -7,6 +7,7 @@ prefixes:
   schema: http://schema.org/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   gn: http://www.geonames.org/ontology#
+  rdac: http://rdaregistry.info/Elements/c/
   wdt: http://www.wikidata.org/prop/direct/
   dcterms: http://purl.org/dc/terms/
   prov: http://www.w3.org/ns/prov#
@@ -58,6 +59,7 @@ classes:
     close_mappings:
       - crm:E53_Place
       - gn:Feature
+      - rdac:C10009  # RDA Registry: Place (RDA Classes)
     slots:
       - has_label
       - has_name

frontend/public/schemas/20251121/linkml/manifest.json

@@ -1,12 +1,12 @@
 {
-  "generated": "2026-02-18T11:39:46.457Z",
+  "generated": "2026-02-18T20:43:54.475Z",
   "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 2183,
+  "totalFiles": 2187,
   "categoryCounts": {
     "main": 4,
     "class": 1377,
     "enum": 158,
-    "slot": 640,
+    "slot": 644,
     "module": 4
   },
   "categories": [
@@ -10387,6 +10387,21 @@
           "path": "modules/slots/owned_by.yaml",
           "category": "slot"
         },
+        {
+          "name": "paid_amount",
+          "path": "modules/slots/paid_amount.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "paid_from",
+          "path": "modules/slots/paid_from.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "paid_to",
+          "path": "modules/slots/paid_to.yaml",
+          "category": "slot"
+        },
         {
           "name": "part_of",
           "path": "modules/slots/part_of.yaml",
@@ -10847,6 +10862,11 @@
           "path": "modules/slots/transferred.yaml",
           "category": "slot"
         },
+        {
+          "name": "transferred_from",
+          "path": "modules/slots/transferred_from.yaml",
+          "category": "slot"
+        },
         {
           "name": "transferred_to",
           "path": "modules/slots/transferred_to.yaml",

frontend/public/schemas/20251121/linkml/modules/classes/Acquisition.yaml

@@ -91,7 +91,7 @@ classes:
     - crm:E8_Acquisition
     close_mappings:
     - prov:Activity
-    - schema:AcquireAction
+    - schema:TradeAction
     related_mappings:
     - rico:Event
     - dwc:Event

frontend/public/schemas/20251121/linkml/modules/classes/Agreement.yaml

@@ -17,7 +17,9 @@ imports:
   - ../slots/temporal_extent
 classes:
   Agreement:
-    class_uri: schema:Contract
+    class_uri: hc:Agreement
+    close_mappings:
+    - schema:Thing
     description: >-
       Formal arrangement between two or more parties establishing mutual
       obligations, rights, or expectations, typically documented in writing

frontend/public/schemas/20251121/linkml/modules/classes/Animal.yaml

@@ -17,7 +17,9 @@ imports:
 - ../slots/categorized_as
 classes:
   Animal:
-    class_uri: schema:Animal
+    class_uri: wd:Q729
+    exact_mappings:
+    - wikidata:Q729
     description: >-
       Multicellular living organism characterized by heterotrophic nutrition,
       motility at some life stage, and sensory response capacity.
@@ -83,10 +85,7 @@ classes:
     - zoological
     - wildlife
     - fauna
-    exact_mappings:
-    - schema:Animal
     broad_mappings:
-    - wd:Q729
     - schema:Thing
     slots:
     - has_label
@@ -103,7 +102,7 @@ classes:
       Preserved from prior description:
 
       **Ontological Alignment**:
-      - `schema:Animal`: Generic animal class.
+      - `wikidata:Q729`: Animal (kingdom Animalia) - Wikidata entity for animals.
     - 'Preserved from prior description: Living organism belonging to the kingdom Animalia, characterized by voluntary movement, consumption of organic material, and typically sensory and nervous systems, relevant to natural history collections and zoological specimens.'
     annotations:
       specificity_score: "0.2"

frontend/public/schemas/20251121/linkml/modules/classes/AuctionHouse.yaml

@@ -42,7 +42,7 @@ classes:
       description: Specialized auction house
     close_mappings:
     - schema:Organization
-    - schema:AuctionHouse
+    - schema:LocalBusiness
     broad_mappings:
     - skos:Concept
     structured_aliases:

frontend/public/schemas/20251121/linkml/modules/classes/AvailabilityStatus.yaml

@@ -15,7 +15,9 @@ prefixes:
 default_prefix: hc
 classes:
   AvailabilityStatus:
-    class_uri: schema:Availability
+    class_uri: hc:AvailabilityStatus
+    broad_mappings:
+    - schema:ItemAvailability
     description: >-
       Availability state of a resource, service, or feature, indicating whether
       something is currently available for use with optional temporal validity

frontend/public/schemas/20251121/linkml/modules/classes/BiologicalObject.yaml

@@ -12,6 +12,7 @@ prefixes:
   gbif: http://rs.gbif.org/terms/
   aat: http://vocab.getty.edu/aat/
 imports:
+  - ./ExhibitedObject
   - linkml:types
   - ../enums/PreservationMethodEnum
   - ../metadata
@@ -47,6 +48,7 @@ imports:
 default_prefix: hc
 classes:
   BiologicalObject:
+    is_a: ExhibitedObject
     class_uri: crm:E20_Biological_Object
     description: >-
       Natural specimen or organism-derived item held in a heritage collection, with associated taxonomic identification and preservation metadata.
@@ -397,29 +399,64 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: https://nde.nl/ontology/hc/taxon/raphus-cucullatus
+    broad_mappings:
+      - crm:E20_Biological_Object
+    close_mappings:
+      - dwc:Occurrence
+      - gbif:Specimen
+    related_mappings:
+      - crm:E19_Physical_Object
+      - crm:E22_Human-Made_Object
+      - schema:Taxon
 
-        predicate: EXACT_SYNONYM
+    slots:
+      - identified_by
+      - has_label
+      - has_name
+      - has_rank
+      - has_authority
+      - commented_on
+      - identified_through
+      - has_specimen
+      - symbolize
+      - has_status
+      - has_gender
+      - has_stage
+      - contain
+      - has_quantity
+      - has_method
+      - has_detail
+      - prepared_on
+      - prepared_by
+      - acquired_through
+      - in_place
+      - describe
+      - acquired_by
+      - has_habitat
+      - has_hypernym
+      - listed_in
+      - has_provenance
+      - has_type
 
-        in_language: zh
+    slot_usage:
-#         range: string # uriorcurie
+      identified_by:
         multivalued: true
         inlined: false # Fixed invalid inline for primitive type
         inlined_as_list: false # Fixed invalid inline for primitive type
         required: false
         any_of:
-        - range: FieldNumber
+          - range: FieldNumber
-        - range: BOLDIdentifier
+          - range: BOLDIdentifier
-        - range: WikiDataIdentifier
+          - range: WikiDataIdentifier
-        - range: string # uriorcurie
+          - range: string # uriorcurie
         examples:
-        - value:
+          - value:
-            has_type: FieldNumber
+              has_type: FieldNumber
-        - value:
+          - value:
-            id: https://nde.nl/ontology/hc/bold-id/NLNAT001-21
+              id: https://nde.nl/ontology/hc/bold-id/NLNAT001-21
-            has_type: BOLDIdentifier
+              has_type: BOLDIdentifier
-        - value:
+          - value:
-            has_type: WikiDataIdentifier
+              has_type: WikiDataIdentifier
       has_label:
         range: TaxonName
         inlined: true

frontend/public/schemas/20251121/linkml/modules/classes/Classroom.yaml

@@ -5,6 +5,7 @@ prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
+  rec: https://w3id.org/rec#
   qudt: http://qudt.org/schema/qudt/
 default_prefix: hc
 imports:
@@ -15,7 +16,7 @@ imports:
 classes:
   Classroom:
     is_a: Facility
-    class_uri: schema:Classroom
+    class_uri: rec:Classroom
     description: >-
       Instructional room entity for teaching, workshops, and guided learning sessions within institutional premises.
     alt_descriptions:
@@ -42,7 +43,7 @@ classes:
         examples:
         - value: 'unit_type: CLASSROOM '
     exact_mappings:
-    - schema:Classroom
+    - rec:Classroom
     close_mappings:
     - schema:Room
     - schema:Place

frontend/public/schemas/20251121/linkml/modules/classes/ComplianceStatus.yaml

@@ -54,8 +54,6 @@ classes:
         required: false
     close_mappings:
     - dcterms:conformsTo
-    related_mappings:
-    - schema:assessment
     annotations:
       custodian_types: '["A", "L", "M"]'
       custodian_types_rationale: Compliance tracking is common for archives, libraries, and museums with preservation mandates.

frontend/public/schemas/20251121/linkml/modules/classes/Currency.yaml

@@ -17,7 +17,9 @@ imports:
   - ../slots/has_score
 classes:
   Currency:
-    class_uri: schema:Currency
+    class_uri: qudt:CurrencyUnit
+    exact_mappings:
+    - qudt:CurrencyUnit
     description: >-
       Standardized monetary unit with ISO 4217 code representation for pricing, budgeting, and financial valuation metadata.
     alt_descriptions:

frontend/public/schemas/20251121/linkml/modules/classes/DeceasedStatus.yaml

@@ -17,7 +17,9 @@ imports:
 - ../slots/temporal_extent
 classes:
   DeceasedStatus:
-    class_uri: schema:DeathEvent
+    class_uri: hc:DeceasedStatus
+    broad_mappings:
+    - schema:Event
     description: >-
       Structured event record for a person's death including causal,
       temporal, and contextual attributes.
@@ -38,9 +40,8 @@ classes:
     - {literal_form: status kematian, in_language: id}
     - {literal_form: 死亡状态记录, in_language: zh}
     exact_mappings:
-    - schema:DeathEvent
-    close_mappings:
     - crm:E69_Death
+    close_mappings:
     related_mappings:
     - prov:End
     keywords:

frontend/public/schemas/20251121/linkml/modules/classes/Documentation.yaml

@@ -36,195 +36,81 @@ classes:
       zh: >-
         描述平台界面、操作程序或用户实施指南的技术参考资料。
     structured_aliases:
-
       - literal_form: documentatie
-
         predicate: EXACT_SYNONYM
-
         in_language: nl
-
       - literal_form: technische handleiding
-
         predicate: EXACT_SYNONYM
-
         in_language: nl
-
       - literal_form: Dokumentation
-
         predicate: EXACT_SYNONYM
-
         in_language: de
-
       - literal_form: technische Anleitung
-
         predicate: EXACT_SYNONYM
-
         in_language: de
-
       - literal_form: documentation
-
         predicate: EXACT_SYNONYM
-
         in_language: fr
-
       - literal_form: guide technique
-
         predicate: EXACT_SYNONYM
-
         in_language: fr
-
       - literal_form: documentación
-
         predicate: EXACT_SYNONYM
-
         in_language: es
-
       - literal_form: guía técnica
-
         predicate: EXACT_SYNONYM
-
         in_language: es
-
       - literal_form: التوثيق
-
         predicate: EXACT_SYNONYM
-
         in_language: ar
-
       - literal_form: الدليل الفني
-
         predicate: EXACT_SYNONYM
-
         in_language: ar
-
       - literal_form: dokumentasi
-
         predicate: EXACT_SYNONYM
-
         in_language: id
-
       - literal_form: panduan teknis
-
         predicate: EXACT_SYNONYM
-
         in_language: id
-
       - literal_form: 文档
-
         predicate: EXACT_SYNONYM
-
         in_language: zh
-
       - literal_form: 技术指南
-
         predicate: EXACT_SYNONYM
-
         in_language: zh
 
-      - literal_form: documentation
+    broad_mappings:
+      - schema:TechArticle
+      - foaf:Document
+    close_mappings:
+      - crm:E73_Information_Object
 
-        predicate: EXACT_SYNONYM
+    slots:
+      - identified_by
+      - has_label
+      - has_description
+      - temporal_extent
 
-        in_language: zh
+    slot_usage:
-
+      identified_by:
-      - literal_form: technical guide
+        range: uri
-
+        required: true
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: API reference
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: user manual
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: operational guide
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: schema:CreativeWork
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: foaf:Document
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: schema:TechArticle
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: crm:E73_Information_Object
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: dcterms:references
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: has_label
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: has_description
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: identified_by
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: temporal_extent
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: value: https://data.rijksmuseum.nl/object-metadata/api/
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-#         range: string
         examples:
-        - value: API Reference Documentation
+          - value: https://data.rijksmuseum.nl/object-metadata/api/
-        - value: Developer Integration Guide
+      has_label:
+        required: true
+        examples:
+          - value: Rijksmuseum Collection API
       has_description:
-#         range: string
-        examples:
-        - value: Complete REST API reference with endpoint specifications, authentication, and response formats.
-      temporal_extent:
-        range: TimeSpan
-        inlined: true
         required: false
         examples:
-        - value:
+          - value: Complete REST API reference with endpoint specifications, authentication, and response formats.
-            begin_of_the_begin: '2015-01-01'
+      temporal_extent:
+        required: false
+        examples:
+          - value:
+              begin_of_the_begin: '2015-01-01'
+              has_verbatim_value: 2015-
     comments:
     - Generic documentation class replacing domain-specific documentation slots
     - Supports multiple documentation types (API, user, developer, system)

frontend/public/schemas/20251121/linkml/modules/classes/Expenses.yaml

@@ -186,19 +186,19 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: |
+      - literal_form: "value: |"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: expense_type: ADMINISTRATIVE
+      - literal_form: "expense_type: ADMINISTRATIVE"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: expense_type: PROGRAM
+      - literal_form: "expense_type: PROGRAM"
 
         predicate: EXACT_SYNONYM
 

frontend/public/schemas/20251121/linkml/modules/classes/ForkliftAccess.yaml

@@ -12,7 +12,7 @@ imports:
 - ../slots/has_description
 classes:
   ForkliftAccess:
-    class_uri: schema:AmenityFeature
+    class_uri: schema:LocationFeatureSpecification
     description: >-
       Facility access feature indicating whether spaces permit forklift entry
       for logistics, handling, or collection movement.

frontend/public/schemas/20251121/linkml/modules/classes/HandsOnFacility.yaml

@@ -12,7 +12,7 @@ imports:
 - ../slots/has_description
 classes:
   HandsOnFacility:
-    class_uri: schema:AmenityFeature
+    class_uri: schema:LocationFeatureSpecification
     description: >-
       Amenity feature indicating availability of interactive, practical learning
       or handling spaces for visitors and participants.

frontend/public/schemas/20251121/linkml/modules/classes/InstitutionalRepository.yaml

@@ -15,7 +15,9 @@ imports:
 classes:
   InstitutionalRepository:
     is_a: ArchiveOrganizationType
-    class_uri: schema:DigitalLibrary
+    class_uri: hc:InstitutionalRepository
+    broad_mappings:
+    - schema:Library
     description: >-
       Digital repository service for preserving, publishing, and providing access
       to scholarly output produced by an academic or research institution.
@@ -62,8 +64,6 @@ classes:
     - literal_form: 机构仓储
       predicate: EXACT_SYNONYM
       in_language: zh
-    broad_mappings:
-    - schema:DigitalLibrary
     close_mappings:
     - skos:Concept
     slots:

frontend/public/schemas/20251121/linkml/modules/classes/LoadingDock.yaml

@@ -11,7 +11,7 @@ imports:
 - ../slots/has_description
 classes:
   LoadingDock:
-    class_uri: schema:AmenityFeature
+    class_uri: schema:LocationFeatureSpecification
     description: >-
       Designated area for receiving and dispatching physical items through vehicular transport.
     alt_descriptions:

frontend/public/schemas/20251121/linkml/modules/classes/Locker.yaml

@@ -11,7 +11,7 @@ imports:
 - ../slots/has_description
 classes:
   Locker:
-    class_uri: schema:AmenityFeature
+    class_uri: schema:LocationFeatureSpecification
     description: >-
       Secure storage compartment provided as a visitor or staff amenity for temporary personal item retention.
     alt_descriptions:
@@ -52,7 +52,7 @@ classes:
       predicate: EXACT_SYNONYM
       in_language: zh
     broad_mappings:
-    - schema:AmenityFeature
+    - schema:LocationFeatureSpecification
     slots:
     - has_description
     comments:

frontend/public/schemas/20251121/linkml/modules/classes/Manufacturer.yaml

@@ -185,7 +185,7 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: |
+      - literal_form: "value: |"
 
         predicate: EXACT_SYNONYM
 
@@ -197,37 +197,37 @@ classes:
 
         in_language: zh
 
-      - literal_form: has_label: Manufacturer name (String or Label)
+      - literal_form: "has_label: Manufacturer name (String or Label)"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_url: Manufacturer website (URL)
+      - literal_form: "has_url: Manufacturer website (URL)"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: identified_by: Unique identifier
+      - literal_form: "identified_by: Unique identifier"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Primary**: `schema:Organization` - Schema.org organization
+      - literal_form: "**Primary**: `schema:Organization` - Schema.org organization"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Close**: `org:Organization` - W3C ORG organization
+      - literal_form: "**Close**: `org:Organization` - W3C ORG organization"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Related**: `prov:Agent` - PROV-O agent responsible for production
+      - literal_form: "**Related**: `prov:Agent` - PROV-O agent responsible for production"
 
         predicate: EXACT_SYNONYM
 

frontend/public/schemas/20251121/linkml/modules/classes/OrganizerRole.yaml

@@ -174,13 +174,13 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: PRIMARY
+      - literal_form: "value: PRIMARY"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: CO_ORGANIZER
+      - literal_form: "value: CO_ORGANIZER"
 
         predicate: EXACT_SYNONYM
 
@@ -192,43 +192,43 @@ classes:
 
         in_language: zh
 
-      - literal_form: PRIMARY: Main organizing institution
+      - literal_form: "PRIMARY: Main organizing institution"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: CO_ORGANIZER: Partner institution with significant organizational role
+      - literal_form: "CO_ORGANIZER: Partner institution with significant organizational role"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: SPONSOR_ORGANIZER: Sponsor with curatorial/organizational input
+      - literal_form: "SPONSOR_ORGANIZER: Sponsor with curatorial/organizational input"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: LENDING_INSTITUTION: Institution lending objects with exhibition involvement
+      - literal_form: "LENDING_INSTITUTION: Institution lending objects with exhibition involvement"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: HOST_VENUE: Venue hosting a traveling exhibition
+      - literal_form: "HOST_VENUE: Venue hosting a traveling exhibition"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Primary**: `schema:Role` - Schema.org role
+      - literal_form: "**Primary**: `schema:Role` - Schema.org role"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Close**: `prov:Role` - PROV-O role in activity
+      - literal_form: "**Close**: `prov:Role` - PROV-O role in activity"
 
         predicate: EXACT_SYNONYM
 

frontend/public/schemas/20251121/linkml/modules/classes/OutdoorSite.yaml

@@ -380,163 +380,163 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: https://nde.nl/ontology/hc/aux/kroller-muller-sculpture
+      - literal_form: "value: https://nde.nl/ontology/hc/aux/kroller-muller-sculpture"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: Kroller-Muller Beeldentuin
+      - literal_form: "value: Kroller-Muller Beeldentuin"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: Paleis Het Loo Tuinen
+      - literal_form: "value: Paleis Het Loo Tuinen"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: Archeologisch Park Matilo
+      - literal_form: "value: Archeologisch Park Matilo"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: One of Europe's largest sculpture gardens with 160 works set in 25 hectares of park landscape within De Hoge Veluwe National Park.
+      - literal_form: "value: One of Europe's largest sculpture gardens with 160 works set in 25 hectares of park landscape within De Hoge Veluwe National Park."
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: range: OutdoorSiteTypeEnum
+      - literal_form: "range: OutdoorSiteTypeEnum"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: range: FeatureType
+      - literal_form: "range: FeatureType"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: SCULPTURE_GARDEN
+      - literal_form: "value: SCULPTURE_GARDEN"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: ARCHAEOLOGICAL_SITE
+      - literal_form: "value: ARCHAEOLOGICAL_SITE"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: FORMAL_GARDEN
+      - literal_form: "value: FORMAL_GARDEN"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: BotanicalInstitutionClassification
+      - literal_form: "value: BotanicalInstitutionClassification"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: ZoologicalInstitutionClassification
+      - literal_form: "value: ZoologicalInstitutionClassification"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: 160
+      - literal_form: "value: 160"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: 2500
+      - literal_form: "value: 2500"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: area_value: 25.0
+      - literal_form: "area_value: 25.0"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Included with museum ticket
+      - literal_form: "has_label: Included with museum ticket"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Paved paths
+      - literal_form: "has_label: Paved paths"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Wheelchair routes available
+      - literal_form: "has_label: Wheelchair routes available"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: area_value: 650.0
+      - literal_form: "area_value: 650.0"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Included with palace ticket
+      - literal_form: "has_label: Included with palace ticket"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: area_value: 3.5
+      - literal_form: "area_value: 3.5"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Free
+      - literal_form: "has_label: Free"
 
         predicate: EXACT_SYNONYM
 

frontend/public/schemas/20251121/linkml/modules/classes/ParishArchive.yaml

@@ -200,13 +200,13 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: hc:ArchiveOrganizationType
+      - literal_form: "value: hc:ArchiveOrganizationType"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: hc:HolySacredSiteType
+      - literal_form: "value: hc:HolySacredSiteType"
 
         predicate: EXACT_SYNONYM
 

frontend/public/schemas/20251121/linkml/modules/classes/ProductCategory.yaml

@@ -42,7 +42,7 @@ classes:
       zh: >-
         分类概念，根据分类系统中的共同特征、功能、材料或预期用途对产品或项目进行分组。
     exact_mappings:
-      - schema:Category
+      - schema:CategoryCode
     broad_mappings:
       - skos:Concept
       - schema:Thing

frontend/public/schemas/20251121/linkml/modules/classes/SupervisedHandling.yaml

@@ -13,7 +13,9 @@ imports:
 - ../slots/has_description
 classes:
   SupervisedHandling:
-    class_uri: schema:Policy
+    class_uri: hc:SupervisedHandling
+    close_mappings:
+    - schema:Thing
     description: >-
       Policy mandating that access to or manipulation of materials occurs only under staff observation and guidance to ensure proper care.
     alt_descriptions:

frontend/public/schemas/20251121/linkml/modules/classes/WikidataRecognition.yaml

@@ -44,7 +44,6 @@ classes:
     broad_mappings:
       - prov:Entity
     related_mappings:
-      - schema:Award
       - crm:E7_Activity
       - schema:Organization
     slots: []

frontend/public/schemas/20251121/linkml/modules/classes/YoutubeTranscript.yaml

@@ -24,13 +24,12 @@ classes:
       ar: نسخ فيديو YouTube بما في ذلك معرف الفيديو واللغة ونوع النسخ (يدوي أو مولد تلقائيًا) والنص الكامل وبيانات الاستخراج الوصفية للوصول وتحليل المحتوى.
       id: Transkrip video YouTube termasuk ID video, bahasa, jenis transkrip (manual atau dihasilkan otomatis), teks lengkap, dan metadata ekstraksi untuk aksesibilitas dan analisis konten.
       zh: YouTube视频字幕，包括视频ID、语言、字幕类型（手动或自动生成）、 全文和提取元数据，用于无障碍访问和内容分析。
-    class_uri: schema:Transcript
+    class_uri: hc:YoutubeTranscript
     close_mappings:
-    - schema:Transcript
+    - schema:MediaObject
     related_mappings:
     - oa:TextualBody
     - prov:Entity
-    - schema:MediaObject
     slots:
     - in_language
     structured_aliases:

frontend/public/schemas/20251121/linkml/modules/enums/DonationSchemeTypeEnum.yaml

@@ -573,7 +573,6 @@ enums:
       SPONSORSHIP_EXHIBITION:
         description: |
           Corporate or individual sponsorship of temporary exhibition.
-        meaning: schema:SponsorAction
         annotations:
           category: sponsorship
           typical_benefits: |
@@ -586,7 +585,6 @@ enums:
       SPONSORSHIP_GALLERY:
         description: |
           Named sponsorship of permanent gallery or wing.
-        meaning: schema:SponsorAction
         annotations:
           category: sponsorship
           custodian_types: "G, M, B, H"
@@ -595,7 +593,6 @@ enums:
         description: |
           Sponsorship of institutional event (gala, lecture series,
           education program).
-        meaning: schema:SponsorAction
         annotations:
           category: sponsorship
           custodian_types: "G, L, A, M, O, R, B, E, S, H, D"
@@ -604,7 +601,6 @@ enums:
         description: |
           Sponsorship of ongoing program (education, outreach,
           conservation, research).
-        meaning: schema:SponsorAction
         annotations:
           category: sponsorship
           examples: |
@@ -615,7 +611,6 @@ enums:
       SPONSORSHIP_DIGITIZATION:
         description: |
           Sponsorship of digitization projects for online access.
-        meaning: schema:SponsorAction
         annotations:
           category: sponsorship
           examples: |
@@ -626,7 +621,6 @@ enums:
       SPONSORSHIP_CONSERVATION:
         description: |
           Sponsorship of conservation or restoration work.
-        meaning: schema:SponsorAction
         annotations:
           category: sponsorship
           examples: |

frontend/public/schemas/20251121/linkml/modules/enums/LanguageProficiencyEnum.yaml

@@ -17,18 +17,13 @@ enums:
     permissible_values:
       NATIVE_BILINGUAL:
         description: Native or bilingual proficiency
-        meaning: schema:Expert
       FULL_PROFESSIONAL:
         description: Full professional proficiency
-        meaning: schema:Advanced
       PROFESSIONAL_WORKING:
         description: Professional working proficiency
-        meaning: schema:Intermediate
       LIMITED_WORKING:
         description: Limited working proficiency
-        meaning: schema:Intermediate
       ELEMENTARY:
         description: Elementary proficiency
-        meaning: schema:Beginner
       UNKNOWN:
         description: Proficiency level not specified

frontend/public/schemas/20251121/linkml/modules/enums/LoanStatusEnum.yaml

@@ -57,7 +57,6 @@ enums:
         description: |
           Initial loan request submitted by borrowing institution.
           Loan is awaiting review by lending institution.
-        meaning: schema:PendingAction
         annotations:
           loan_phase: "initiation"
           next_states: '["UNDER_REVIEW", "DECLINED", "CANCELLED"]'
@@ -110,7 +109,6 @@ enums:
         description: |
           Object in transit from lender to borrower.
           May involve courier accompaniment for high-value items.
-        meaning: schema:InTransitAction
         annotations:
           loan_phase: "transit"
           next_states: '["ON_LOAN", "RETURNED"]'
@@ -144,7 +142,6 @@ enums:
         description: |
           Object in transit from borrower back to lender.
           Return journey underway.
-        meaning: schema:InTransitAction
         annotations:
           loan_phase: "transit"
           next_states: '["RETURNED"]'

frontend/public/schemas/20251121/linkml/modules/enums/QuantityTypeEnum.yaml

@@ -23,7 +23,6 @@ enums:
         meaning: schema:size
       VISITOR_COUNT:
         description: Number of visitors (annual, daily, etc.).
-        meaning: schema:numberOfAttendees
       BUDGET_AMOUNT:
         description: Financial amount (budget, revenue, cost).
         meaning: schema:amount
@@ -53,7 +52,6 @@ enums:
         meaning: schema:numberOfItems
       CHARACTER_COUNT:
         description: Number of characters in text content.
-        meaning: schema:characterCount
       WORD_COUNT:
         description: Number of words in text content.
         meaning: schema:wordCount

frontend/public/schemas/20251121/linkml/modules/enums/RoomUnitTypeEnum.yaml

@@ -18,6 +18,7 @@ prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
+  rec: https://w3id.org/rec#
 
 imports:
   - linkml:types
@@ -34,7 +35,7 @@ enums:
       # Educational spaces
       CLASSROOM:
         description: Teaching/learning space for group instruction
-        meaning: schema:Classroom
+        meaning: rec:Classroom
         annotations:
           usage_context: education
           typical_capacity: "20-40"

frontend/public/schemas/20251121/linkml/modules/slots/SlotsBundle.yaml

@@ -538,6 +538,9 @@ imports:
   - ./outbound_to
   - ./overlap_with
   - ./owned_by
+  - ./paid_amount
+  - ./paid_from
+  - ./paid_to
   - ./part_of
   - ./participate_in
   - ./performed_by
@@ -628,6 +631,7 @@ imports:
   - ./threatened_by
   - ./track
   - ./transferred
+  - ./transferred_from
   - ./transferred_to
   - ./transmission
   - ./transmit_through

frontend/public/schemas/20251121/linkml/modules/slots/add.yaml

@@ -31,6 +31,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -96,6 +97,7 @@ slots:
       - schema:object  # schemaorg.owl:27871-27890 - "The object upon which the action is carried out." Broader: object of any action, not specifically accessioning.
     related_mappings:
       - crm:P24_transferred_title_of  # CIDOC_CRM_v7.1.3.rdf:1738-1750 - "Identifies the E18 Physical Thing involved in an E8 Acquisition." Legal transfer aspect of accessioning.
+      - la:added_member  # Linked Art extensions: member added to a Set via an Addition activity
     aliases:
       - objects_added
     examples:

frontend/public/schemas/20251121/linkml/modules/slots/equivalent_to.yaml

@@ -24,6 +24,7 @@ prefixes:
   skos: http://www.w3.org/2004/02/skos/core#
   owl: http://www.w3.org/2002/07/owl#
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -87,6 +88,7 @@ slots:
     close_mappings:
       - owl:sameAs  # W3C OWL 2 standard - Identity assertion (stronger claim than semantic equivalence).
       - schema:sameAs  # schemaorg.owl:34129-34148 - "URL unambiguously indicating the item's identity."
+      - la:equivalent  # Linked Art extensions: equivalent instance (skos:exactMatch-like without Concept inference)
     aliases:
       - is_or_was_equivalent_to
       - wikidata_equivalent

frontend/public/schemas/20251121/linkml/modules/slots/has_accessibility_feature.yaml

@@ -142,17 +142,17 @@ slots:
       - has_or_had_accessibility_feature
       - is_accessible
     examples:
-      - value: "schema:wheelchairAccessible"
+      - value: "wheelchairAccessible"
         description: Physical location is accessible by wheelchair
-      - value: "schema:audioDescription"
+      - value: "audioDescription"
         description: Content includes audio description for visually impaired users
-      - value: "schema:captions"
+      - value: "captions"
         description: Content includes captions for deaf or hard-of-hearing users
-      - value: "schema:signLanguage"
+      - value: "signLanguage"
         description: Content includes sign language interpretation
-      - value: "schema:braille"
+      - value: "braille"
         description: Materials available in Braille format
-      - value: "schema:largePrint"
+      - value: "largePrint"
         description: Materials available in large print format
     comments:
       - Updated 2026-02-03 with verified ontology mappings and translations

frontend/public/schemas/20251121/linkml/modules/slots/has_custodian.yaml

@@ -25,6 +25,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   rico: https://www.ica.org/standards/RiC/ontology#
+  la: https://linked.art/ns/terms/
   xsd: http://www.w3.org/2001/XMLSchema#
 
 default_prefix: hc
@@ -82,6 +83,8 @@ slots:
       - crm:P49_has_former_or_current_keeper  # CIDOC_CRM_v7.1.3.rdf:2383-2408 - includes former keepers (broader temporal scope)
       - crm:P50_has_current_keeper  # CIDOC_CRM_v7.1.3.rdf:2410-2424 - "current keeper" but domain E18 Physical Thing / range E39 Actor (typed objects)
       - rico:hasOrHadHolder  # RiC-O_1-1.rdf:6436-6475 - "has or had holder" — archival holding context, domain RecordResource/Instantiation
+    related_mappings:
+      - la:current_permanent_custodian  # Linked Art extensions: normal/permanent custodian of a physical object (E19->E39)
     comments:
       - |
         MIGRATED 2026-02-03 from has_or_had_custodian for conciseness.

frontend/public/schemas/20251121/linkml/modules/slots/has_keyword.yaml

@@ -23,6 +23,7 @@ prefixes:
   schema: http://schema.org/
   dcat: http://www.w3.org/ns/dcat#
   dcterms: http://purl.org/dc/terms/
+  ardo: https://w3id.org/ardo/2.0/
 imports:
   - linkml:types
 default_prefix: hc
@@ -80,6 +81,8 @@ slots:
       - dcat:keyword  # dcat3.ttl:1208-1231 - "A keyword or tag describing a resource"
     close_mappings:
       - dcterms:subject  # dcterms.rdf:1968-1988 - "A topic of the resource"
+    related_mappings:
+      - ardo:has_keyword  # ArDO 2.0: links a thematic subcategory to a keyword (object property)
     comments:
       - "Used for discovery and classification."
     annotations:

frontend/public/schemas/20251121/linkml/modules/slots/has_member.yaml

@@ -25,6 +25,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   org: http://www.w3.org/ns/org#
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
   xsd: http://www.w3.org/2001/XMLSchema#
 default_prefix: hc
 imports:
@@ -80,5 +81,7 @@ slots:
     exact_mappings:
       - org:hasMember  # org.rdf:427-446 - "Indicates a person who is a member of the subject Organization." Domain: Organization, Range: Agent. Organization membership only; this slot also covers collection elements.
       - schema:member  # schemaorg.owl:26055-26085 - "A member of an Organization or a ProgramMembership." Domain: Organization/ProgramMembership. Does not cover collection elements.
+    related_mappings:
+      - la:has_member  # Linked Art extensions: membership (Set→Entity)
     annotations:
       custodian_types: '["*"]'

frontend/public/schemas/20251121/linkml/modules/slots/has_standard.yaml

@@ -19,6 +19,7 @@ prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
   dcterms: http://purl.org/dc/terms/
+  pca: http://rds.posccaesar.org/ontology/plm/rdl/
 default_prefix: hc
 imports:
 - linkml:types
@@ -82,3 +83,5 @@ slots:
       custodian_types: '["*"]'
     close_mappings:
     - dcterms:conformsTo  # dcterms.rdf:987-1010 - "An established standard to which the described resource conforms." Conformance relationship ≠ having a standard.
+    related_mappings:
+    - pca:PCA_100003538  # POSC Caesar RDL (PCA PLM core): Standard (class)

frontend/public/schemas/20251121/linkml/modules/slots/has_version.yaml

@@ -24,6 +24,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
   dcterms: http://purl.org/dc/terms/
+  pav: http://purl.org/pav/2.3#
 default_prefix: hc
 imports:
 - linkml:types
@@ -81,6 +82,7 @@ slots:
     multivalued: false
     related_mappings:
       - dcterms:hasVersion  # dcterms.rdf:1371-1395 — "A related resource that is a version, edition, or adaptation." Relates resources to each other, not a version identifier.
+      - pav:hasVersion  # PAV 2.3 (used by ArDO): links a resource to a version resource
     aliases:
       - has_or_had_version
       - api_ver

frontend/public/schemas/20251121/linkml/modules/slots/hold.yaml

@@ -27,6 +27,7 @@ prefixes:
   schema: http://schema.org/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   rico: https://www.ica.org/standards/RiC/ontology#
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -115,6 +116,7 @@ slots:
       custodian_types: '["*"]'
     related_mappings:
       - schema:owns  # schemaorg.owl:28732-28760 — "Things owned by the organization or person." Ownership ≠ custody/holding.
+      - la:current_permanent_custodian_of  # Linked Art extensions: inverse of current_permanent_custodian (Actor->Physical Object)
     close_mappings:
       - crm:P49i_is_former_or_current_keeper_of  # CIDOC_CRM:2410-2435 — "is former or current keeper of." Custody relationship.
       - rico:isOrWasHolderOf  # RiC-O_1-1.rdf:6436-6470 — "has or had holder" (inverse). Archives holding.

frontend/public/schemas/20251121/linkml/modules/slots/member_of.yaml

@@ -32,6 +32,7 @@ prefixes:
   rico: https://www.ica.org/standards/RiC/ontology#
   org: http://www.w3.org/ns/org#
   foaf: http://xmlns.com/foaf/0.1/
+  la: https://linked.art/ns/terms/
 default_prefix: hc
 imports:
   - linkml:types
@@ -98,6 +99,7 @@ slots:
       - rico:isOrWasMemberOf  # RiC-O_1-1.rdf:14505-14550 - Person→Group (restricted domain)
     related_mappings:
       - foaf:member  # foaf.ttl:410-417 - INVERSE: Group→Agent (not Agent→Group)
+      - la:member_of  # Linked Art extensions: membership (Entity→Set)
     annotations:
       inverse_slot: has_or_had_member
       deprecates: is_member_of

frontend/public/schemas/20251121/linkml/modules/slots/paid_amount.yaml

@@ -0,0 +1,41 @@
+# ==============================================================================
+# LinkML Slot Definition: paid_amount
+# ==============================================================================
+# Monetary amount paid in a payment/transfer context.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property         | Mapping | Notes                                                |
+# |----------------|------------------|---------|------------------------------------------------------|
+# | **Linked Art** | `la:paid_amount` | exact   | Payment -> Monetary Amount in Linked Art extensions. |
+# | **Schema.org** | `schema:price`   | close   | Price/value expression, broader commerce usage.      |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/paid_amount
+name: paid_amount
+title: Paid Amount
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  paid_amount:
+    slot_uri: hc:paidAmount
+    description: >-
+      Specifies the amount that was paid as part of a payment or transfer.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:paid_amount
+    close_mappings:
+      - schema:price
+    aliases:
+      - is_or_was_paid_amount
+    annotations:
+      custodian_types: '["*"]'

frontend/public/schemas/20251121/linkml/modules/slots/paid_from.yaml

@@ -0,0 +1,41 @@
+# ==============================================================================
+# LinkML Slot Definition: paid_from
+# ==============================================================================
+# Paying party/source in a payment context.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property       | Mapping | Notes                                                     |
+# |----------------|----------------|---------|-----------------------------------------------------------|
+# | **Linked Art** | `la:paid_from` | exact   | Payment source actor in Linked Art extensions.            |
+# | **Schema.org** | `schema:buyer` | related | Buyer role; related commercial payer perspective.         |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/paid_from
+name: paid_from
+title: Paid From
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  paid_from:
+    slot_uri: hc:paidFrom
+    description: >-
+      Identifies the party or source from which a payment originated.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:paid_from
+    related_mappings:
+      - schema:buyer
+    aliases:
+      - is_or_was_paid_from
+    annotations:
+      custodian_types: '["*"]'

frontend/public/schemas/20251121/linkml/modules/slots/paid_to.yaml

@@ -0,0 +1,41 @@
+# ==============================================================================
+# LinkML Slot Definition: paid_to
+# ==============================================================================
+# Receiving party/destination in a payment context.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property        | Mapping | Notes                                                     |
+# |----------------|-----------------|---------|-----------------------------------------------------------|
+# | **Linked Art** | `la:paid_to`    | exact   | Payment recipient actor in Linked Art extensions.         |
+# | **Schema.org** | `schema:seller` | related | Seller role; related commercial payee perspective.        |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/paid_to
+name: paid_to
+title: Paid To
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  paid_to:
+    slot_uri: hc:paidTo
+    description: >-
+      Identifies the party or destination to which a payment was made.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:paid_to
+    related_mappings:
+      - schema:seller
+    aliases:
+      - is_or_was_paid_to
+    annotations:
+      custodian_types: '["*"]'

frontend/public/schemas/20251121/linkml/modules/slots/preceded_by.yaml

@@ -35,6 +35,7 @@ prefixes:
   time: http://www.w3.org/2006/time#
   schema: http://schema.org/
   dcterms: http://purl.org/dc/terms/
+  pav: http://purl.org/pav/2.3#
 default_prefix: hc
 imports:
   - linkml:types
@@ -110,6 +111,7 @@ slots:
       - schema:predecessorOf  # schemaorg.owl:30406-30420 - "Previous variant of product; ProductModel domain"
       - schema:previousItem  # schemaorg.owl:30559-30575 - "Preceding ListItem; ListItem domain"
       - dcterms:replaces  # dcterms.rdf:1827-1846 - "Supplants/supersedes described resource; implies replacement"
+      - pav:previousVersion  # PAV 2.3 (used by ArDO): previous version link (version chain)
     aliases:
       - previous_observation
     examples:

frontend/public/schemas/20251121/linkml/modules/slots/remove.yaml

@@ -32,6 +32,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -98,6 +99,7 @@ slots:
       - schema:object  # schemaorg.owl:27871-27890 - "The object upon which the action is carried out." Broader: object of any action, not specifically deaccessioning.
     related_mappings:
       - crm:P24_transferred_title_of  # CIDOC_CRM_v7.1.3.rdf:1738-1750 - "Identifies the E18 Physical Thing involved in an E8 Acquisition." Legal transfer aspect of deaccessioning/disposal.
+      - la:removed_member  # Linked Art extensions: member removed from a Set via a Removal activity
     aliases:
       - objects_removed
     examples:

frontend/public/schemas/20251121/linkml/modules/slots/transferred.yaml

@@ -22,6 +22,7 @@ prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
   skos: http://www.w3.org/2004/02/skos/core#
   xsd: http://www.w3.org/2001/XMLSchema#
 
@@ -83,5 +84,6 @@ slots:
       - is_or_was_transferred
     related_mappings:
       - schema:TransferAction  # schemaorg.owl:5808-5812 - "act of transferring animate or inanimate objects"
+      - la:transferred  # Linked Art extensions: what was transferred (Transfer->Entity). Note: this slot is boolean, so mapping is conceptual only.
     annotations:
       custodian_types: '["*"]'

frontend/public/schemas/20251121/linkml/modules/slots/transferred_from.yaml

@@ -0,0 +1,45 @@
+# ==============================================================================
+# LinkML Slot Definition: transferred_from
+# ==============================================================================
+# Source party/place from which something was transferred.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property              | Mapping | Notes                                                       |
+# |----------------|-----------------------|---------|-------------------------------------------------------------|
+# | **Linked Art** | `la:transferred_from` | exact   | Source entity in a transfer in Linked Art extensions.       |
+# | **CIDOC-CRM**  | `crm:P27_moved_from`  | narrow  | Location-only origin (place), narrower than general source. |
+# | **Schema.org** | `schema:fromLocation` | narrow  | Location-only source in action logistics.                   |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/transferred_from
+name: transferred_from
+title: Transferred From
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  crm: http://www.cidoc-crm.org/cidoc-crm/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  transferred_from:
+    slot_uri: hc:transferredFrom
+    description: >-
+      Identifies the source party, owner, custodian, or location from which
+      something was transferred.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:transferred_from
+    narrow_mappings:
+      - crm:P27_moved_from
+      - schema:fromLocation
+    aliases:
+      - is_or_was_transferred_from
+    annotations:
+      custodian_types: '["*"]'

frontend/public/schemas/20251121/linkml/modules/slots/transferred_to.yaml

@@ -24,6 +24,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
   odrl: http://www.w3.org/ns/odrl/2/
+  la: https://linked.art/ns/terms/
   skos: http://www.w3.org/2004/02/skos/core#
   xsd: http://www.w3.org/2001/XMLSchema#
 
@@ -86,5 +87,6 @@ slots:
       - is_or_was_transferred_to
     related_mappings:
       - schema:TransferAction  # schemaorg.owl:5808-5812 - "act of transferring animate or inanimate objects"
+      - la:transferred_to  # Linked Art extensions: transferred to (Transfer→Entity)
     annotations:
       custodian_types: '["*"]'

frontend/scripts/generate-ontology-uml.cjs

@@ -0,0 +1,356 @@
+#!/usr/bin/env node
+/*
+ * Generate a Mermaid UML class diagram from the synced LinkML schemas.
+ *
+ * Output: frontend/public/data/heritage_custodian_ontology.mmd
+ *
+ * The Visualize page loads this file from /data/heritage_custodian_ontology.mmd.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const SCHEMA_DIR = path.join(__dirname, '../public/schemas/20251121/linkml');
+const MANIFEST_PATH = path.join(SCHEMA_DIR, 'manifest.json');
+const OUTPUT_PATH = path.join(__dirname, '../public/data/heritage_custodian_ontology.mmd');
+
+function readJson(p) {
+  return JSON.parse(fs.readFileSync(p, 'utf8'));
+}
+
+function readText(p) {
+  return fs.readFileSync(p, 'utf8');
+}
+
+function ensureDir(p) {
+  const dir = path.dirname(p);
+  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
+}
+
+function safeArray(v) {
+  return Array.isArray(v) ? v : [];
+}
+
+function indentOf(line) {
+  const m = line.match(/^ */);
+  return m ? m[0].length : 0;
+}
+
+function isBlankOrComment(line) {
+  const t = line.trim();
+  return t === '' || t.startsWith('#');
+}
+
+function stripInlineComment(v) {
+  // Conservative: only strip comments when preceded by whitespace.
+  // This avoids clobbering URLs like http://example.com#fragment.
+  return v.replace(/\s+#.*$/, '').trim();
+}
+
+function stripQuotes(v) {
+  const s = v.trim();
+  if ((s.startsWith('"') && s.endsWith('"')) || (s.startsWith("'") && s.endsWith("'"))) {
+    return s.slice(1, -1);
+  }
+  return s;
+}
+
+function collectIndentedBlock(lines, startIndex, startIndent) {
+  const block = [lines[startIndex]];
+  for (let i = startIndex + 1; i < lines.length; i++) {
+    const line = lines[i];
+    if (isBlankOrComment(line)) {
+      block.push(line);
+      continue;
+    }
+
+    const ind = indentOf(line);
+    if (ind <= startIndent) break;
+    block.push(line);
+  }
+  return block;
+}
+
+function findScalarInBlock(blockLines, key, minIndent) {
+  // Returns a single-line scalar value for `${key}: value`.
+  // Ignores folded/literal multi-line scalars (>- / |).
+  for (const line of blockLines) {
+    if (isBlankOrComment(line)) continue;
+    if (indentOf(line) < minIndent) continue;
+    const m = line.match(new RegExp(`^\\s*${key}:\\s*(.+)\\s*$`));
+    if (!m) continue;
+    const raw = stripInlineComment(m[1]);
+    if (raw === '' || raw === '|' || raw === '>-') continue;
+    return stripQuotes(raw);
+  }
+  return null;
+}
+
+function findListInBlock(blockLines, key, minIndent) {
+  // Parses:
+  //   key:
+  //     - item
+  //     - item2
+  const out = [];
+  for (let i = 0; i < blockLines.length; i++) {
+    const line = blockLines[i];
+    if (isBlankOrComment(line)) continue;
+    const ind = indentOf(line);
+    if (ind < minIndent) continue;
+    const keyMatch = line.match(new RegExp(`^\\s*${key}:\\s*$`));
+    if (!keyMatch) continue;
+    const keyIndent = ind;
+
+    for (let j = i + 1; j < blockLines.length; j++) {
+      const l = blockLines[j];
+      if (isBlankOrComment(l)) continue;
+      const li = indentOf(l);
+      if (li <= keyIndent) break;
+      const m = l.match(/^\s*-\s*(.+)\s*$/);
+      if (m) {
+        out.push(stripQuotes(stripInlineComment(m[1])));
+      }
+    }
+
+    break;
+  }
+  return out;
+}
+
+function parseSlotUsageOverrides(classBlockLines, minIndent) {
+  // Parses:
+  //   slot_usage:
+  //     slot_name:
+  //       range: SomeClass
+  const overrides = new Map();
+
+  for (let i = 0; i < classBlockLines.length; i++) {
+    const line = classBlockLines[i];
+    if (isBlankOrComment(line)) continue;
+    const ind = indentOf(line);
+    if (ind < minIndent) continue;
+
+    if (!line.match(/^\s*slot_usage:\s*$/)) continue;
+    const usageIndent = ind;
+
+    let currentSlot = null;
+    let currentSlotIndent = null;
+
+    for (let j = i + 1; j < classBlockLines.length; j++) {
+      const l = classBlockLines[j];
+      if (isBlankOrComment(l)) continue;
+      const li = indentOf(l);
+      if (li <= usageIndent) break;
+
+      // Slot key line: `  slot_name:`
+      if (li === usageIndent + 2) {
+        const mKey = l.trim().match(/^([^\s:]+):\s*$/);
+        if (mKey) {
+          currentSlot = mKey[1];
+          currentSlotIndent = li;
+          continue;
+        }
+      }
+
+      if (currentSlot && currentSlotIndent !== null && li > currentSlotIndent) {
+        const mRange = l.match(/^\s*range:\s*(.+)\s*$/);
+        if (mRange) {
+          const range = stripQuotes(stripInlineComment(mRange[1]));
+          if (range) overrides.set(currentSlot, range);
+        }
+      }
+    }
+
+    break;
+  }
+
+  return overrides;
+}
+
+function extractNamedMappingBlock(text, rootKey, itemName) {
+  // Extract the YAML-ish block for `rootKey: { itemName: {...} }` without parsing YAML.
+  // This is resilient to invalid YAML elsewhere in the file.
+  const lines = text.split(/\r?\n/);
+  for (let i = 0; i < lines.length; i++) {
+    const line = lines[i];
+    if (isBlankOrComment(line)) continue;
+
+    const rootMatch = line.match(new RegExp(`^\\s*${rootKey}:\\s*$`));
+    if (!rootMatch) continue;
+    const rootIndent = indentOf(line);
+
+    for (let j = i + 1; j < lines.length; j++) {
+      const l = lines[j];
+      if (isBlankOrComment(l)) continue;
+      const li = indentOf(l);
+      if (li <= rootIndent) break;
+
+      if (li === rootIndent + 2 && l.trim() === `${itemName}:`) {
+        return {
+          blockLines: collectIndentedBlock(lines, j, li),
+          baseIndent: li,
+        };
+      }
+    }
+  }
+  return null;
+}
+
+function extractAllNamedMappingBlocks(text, rootKey) {
+  // Extract all mapping entry blocks under `rootKey:`
+  // Example:
+  //   classes:
+  //     Foo:
+  //       ...
+  //     Bar:
+  //       ...
+  const lines = text.split(/\r?\n/);
+  for (let i = 0; i < lines.length; i++) {
+    const line = lines[i];
+    if (isBlankOrComment(line)) continue;
+    const rootMatch = line.match(new RegExp(`^\\s*${rootKey}:\\s*$`));
+    if (!rootMatch) continue;
+
+    const rootIndent = indentOf(line);
+    const blocks = [];
+
+    for (let j = i + 1; j < lines.length; j++) {
+      const l = lines[j];
+      if (isBlankOrComment(l)) continue;
+      const li = indentOf(l);
+      if (li <= rootIndent) break;
+
+      if (li === rootIndent + 2) {
+        const mKey = l.trim().match(/^([^\s:]+):\s*$/);
+        if (mKey) {
+          blocks.push({
+            name: mKey[1],
+            blockLines: collectIndentedBlock(lines, j, li),
+            baseIndent: li,
+          });
+        }
+      }
+    }
+
+    return blocks;
+  }
+
+  return [];
+}
+
+function main() {
+  if (!fs.existsSync(MANIFEST_PATH)) {
+    console.error(`[generate-ontology-uml] Missing manifest: ${MANIFEST_PATH}`);
+    console.error('[generate-ontology-uml] Run pnpm run generate-manifest first.');
+    process.exit(1);
+  }
+
+  const manifest = readJson(MANIFEST_PATH);
+
+  const classCategory = (manifest.categories || []).find((c) => c.name === 'class');
+  const slotCategory = (manifest.categories || []).find((c) => c.name === 'slot');
+
+  const classFiles = safeArray(classCategory && classCategory.files);
+  const slotFiles = safeArray(slotCategory && slotCategory.files);
+
+  const slotIndex = new Map();
+  for (const f of slotFiles) {
+    const fullPath = path.join(SCHEMA_DIR, f.path);
+    if (!fs.existsSync(fullPath)) continue;
+    const text = readText(fullPath);
+    const slotBlocks = extractAllNamedMappingBlocks(text, 'slots');
+    for (const b of slotBlocks) {
+      const range = findScalarInBlock(b.blockLines, 'range', b.baseIndent + 2);
+      const multivaluedRaw = findScalarInBlock(b.blockLines, 'multivalued', b.baseIndent + 2);
+      const multivalued = multivaluedRaw === 'true' || multivaluedRaw === 'True';
+
+      if (!slotIndex.has(b.name)) {
+        slotIndex.set(b.name, {
+          range,
+          multivalued,
+        });
+      }
+    }
+  }
+
+  const classIndex = new Map();
+  for (const f of classFiles) {
+    const fullPath = path.join(SCHEMA_DIR, f.path);
+    if (!fs.existsSync(fullPath)) continue;
+    const text = readText(fullPath);
+    const classBlocks = extractAllNamedMappingBlocks(text, 'classes');
+    for (const b of classBlocks) {
+      const baseIndent = b.baseIndent;
+      const parent = findScalarInBlock(b.blockLines, 'is_a', baseIndent + 2);
+      const slots = findListInBlock(b.blockLines, 'slots', baseIndent + 2);
+      const overrides = parseSlotUsageOverrides(b.blockLines, baseIndent + 2);
+
+      if (!classIndex.has(b.name)) {
+        classIndex.set(b.name, {
+          is_a: parent,
+          slots,
+          slot_usage_overrides: overrides,
+        });
+      }
+    }
+  }
+
+  const classNames = [...classIndex.keys()].sort((a, b) => a.localeCompare(b));
+  const lines = [];
+
+  lines.push('```mermaid');
+  lines.push('classDiagram');
+  lines.push(`%% Generated from LinkML manifest: /schemas/20251121/linkml/manifest.json`);
+  if (manifest.generated) {
+    lines.push(`%% Manifest generated: ${manifest.generated}`);
+  }
+  lines.push('direction LR');
+
+  for (const c of classNames) {
+    lines.push(`class ${c}`);
+  }
+
+  const edgeSet = new Set();
+
+  const addEdge = (a, b, kind, label) => {
+    const key = `${a}|${b}|${kind}|${label || ''}`;
+    if (edgeSet.has(key)) return;
+    edgeSet.add(key);
+    if (kind === 'inheritance') {
+      lines.push(`${b} <|-- ${a}`);
+      return;
+    }
+    if (kind === 'association') {
+      lines.push(`${a} --> ${b} : ${label}`);
+    }
+  };
+
+  for (const [className, classDef] of classIndex.entries()) {
+    const parent = classDef.is_a;
+    if (parent && classIndex.has(parent)) {
+      addEdge(className, parent, 'inheritance');
+    }
+
+    const slots = safeArray(classDef.slots);
+    const slotUsageOverrides = classDef.slot_usage_overrides instanceof Map ? classDef.slot_usage_overrides : new Map();
+
+    for (const slotName of slots) {
+      const slotDef = slotIndex.get(slotName) || {};
+      const range = slotUsageOverrides.get(slotName) || slotDef.range;
+      if (!range) continue;
+      if (classIndex.has(range)) {
+        addEdge(className, range, 'association', slotName);
+      }
+    }
+  }
+
+  lines.push('```');
+  lines.push('');
+
+  ensureDir(OUTPUT_PATH);
+  fs.writeFileSync(OUTPUT_PATH, lines.join('\n'), 'utf8');
+  console.log(`[generate-ontology-uml] Wrote ${OUTPUT_PATH}`);
+  console.log(`[generate-ontology-uml] Classes: ${classIndex.size}, Slots indexed: ${slotIndex.size}, Edges: ${edgeSet.size}`);
+}
+
+main();

frontend/src/components/mapping/MappingExplorer.css

@@ -263,6 +263,25 @@
   flex-shrink: 0;
 }
 
+.mapping-explorer__schema-status {
+  display: flex;
+  align-items: center;
+  height: 34px;
+  padding: 0 10px;
+  border-radius: 6px;
+  border: 1px solid #e0e0e0;
+  background: #ffffff;
+  color: #172a59;
+  font-size: 12px;
+  font-family: 'JetBrains Mono', 'Fira Code', monospace;
+  white-space: nowrap;
+}
+
+.mapping-explorer__schema-status--warn {
+  border-color: #fa5200;
+  box-shadow: 0 0 0 2px rgba(250, 82, 0, 0.15);
+}
+
 /* ============================================================================
  * STATISTICS BAR
  * ============================================================================ */
@@ -528,6 +547,29 @@
   white-space: nowrap;
 }
 
+.mapping-explorer__schema-warning {
+  flex-shrink: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 16px;
+  height: 16px;
+  border-radius: 999px;
+  border: 1px solid rgba(250, 82, 0, 0.45);
+  background: rgba(250, 82, 0, 0.12);
+  color: #fa5200;
+  font-size: 12px;
+  font-weight: 700;
+  line-height: 1;
+}
+
+.mapping-explorer__schema-warning-text {
+  margin-left: 8px;
+  font-size: 12px;
+  color: #fa5200;
+  font-weight: 600;
+}
+
 /* ============================================================================
  * CENTER PANEL: MAPPING ARROWS
  * ============================================================================ */

frontend/src/components/mapping/MappingExplorer.tsx

@@ -25,6 +25,7 @@ import {
   type MappingStatus,
   type CategoryGroup,
 } from '../../lib/linkml/custodian-data-mappings';
+import { loadManifest } from '../../lib/linkml/schema-loader';
 import './MappingExplorer.css';
 
 // ============================================================================
@@ -139,6 +140,7 @@ interface SourceTreeItemProps {
   isSelected: boolean;
   selectedField: FieldMapping | null;
   dataSource: DataSourceType;
+  getFieldSchemaValidity?: (field: FieldMapping) => { classOk: boolean; slotOk: boolean };
   onToggle: () => void;
   onSelectSource: () => void;
   onSelectField: (field: FieldMapping) => void;
@@ -156,6 +158,7 @@ const SourceTreeItem: React.FC<SourceTreeItemProps> = ({
   isSelected,
   selectedField,
   dataSource,
+  getFieldSchemaValidity,
   onToggle,
   onSelectSource,
   onSelectField,
@@ -182,19 +185,32 @@ const SourceTreeItem: React.FC<SourceTreeItemProps> = ({
       
       {isExpanded && (
         <div className="mapping-explorer__field-list">
-          {mapping.fields.map((field, idx) => (
+          {mapping.fields.map((field, idx) => {
-            <div
+            const validity = getFieldSchemaValidity?.(field);
-              key={idx}
+            const isInvalid = validity ? (!validity.classOk || !validity.slotOk) : false;
-              className={`mapping-explorer__field-item ${selectedField === field ? 'mapping-explorer__field-item--selected' : ''}`}
+
-              onClick={() => onSelectField(field)}
+            return (
-            >
+              <div
-              <span className="mapping-explorer__field-path">
+                key={idx}
-                {(field.sourcePath ?? '—').replace(`${mapping.sourceBlock}.`, '')}
+                className={`mapping-explorer__field-item ${selectedField === field ? 'mapping-explorer__field-item--selected' : ''}`}
-              </span>
+                onClick={() => onSelectField(field)}
-              {field.status && <StatusBadge status={field.status} />}
+              >
-              <TransformationBadge type={field.transformation} />
+                <span className="mapping-explorer__field-path">
-            </div>
+                  {(field.sourcePath ?? '—').replace(`${mapping.sourceBlock}.`, '')}
-          ))}
+                </span>
+                {isInvalid && (
+                  <span
+                    className="mapping-explorer__schema-warning"
+                    title="Target class/slot not found in current LinkML schema"
+                  >
+                    !
+                  </span>
+                )}
+                {field.status && <StatusBadge status={field.status} />}
+                <TransformationBadge type={field.transformation} />
+              </div>
+            );
+          })}
         </div>
       )}
     </div>
@@ -234,6 +250,7 @@ interface FieldDetailsPanelProps {
   field: FieldMapping;
   sourceBlock: string;
   viewMode: 'linkml' | 'typedb' | 'rdf';
+  schemaValidity?: { classOk: boolean; slotOk: boolean };
   translations: {
     copyPath: string;
     copyRdf: string;
@@ -243,7 +260,7 @@ interface FieldDetailsPanelProps {
   };
 }
 
-const FieldDetailsPanel: React.FC<FieldDetailsPanelProps> = ({ field, sourceBlock: _sourceBlock, viewMode, translations }) => {
+const FieldDetailsPanel: React.FC<FieldDetailsPanelProps> = ({ field, sourceBlock: _sourceBlock, viewMode, schemaValidity, translations }) => {
   const [copiedField, setCopiedField] = useState<string | null>(null);
 
   const copyToClipboard = (text: string, fieldName: string) => {
@@ -301,30 +318,36 @@ const FieldDetailsPanel: React.FC<FieldDetailsPanelProps> = ({ field, sourceBloc
         )}
       </div>
 
-      {viewMode === 'linkml' && (
+        {viewMode === 'linkml' && (
-        <div className="mapping-explorer__details-section">
+          <div className="mapping-explorer__details-section">
-          <h5>
+            <h5>
-            <FileCode size={16} className="mapping-explorer__section-icon" />
+              <FileCode size={16} className="mapping-explorer__section-icon" />
-            LinkML Target
+              LinkML Target
-          </h5>
+            </h5>
-          <div className="mapping-explorer__details-row">
+            <div className="mapping-explorer__details-row">
-            <span className="mapping-explorer__details-label">Class:</span>
+              <span className="mapping-explorer__details-label">Class:</span>
-            <code className="mapping-explorer__details-value mapping-explorer__details-value--class">
+              <code className="mapping-explorer__details-value mapping-explorer__details-value--class">
-              {field.targetClass}
+                {field.targetClass}
-            </code>
+              </code>
+              {schemaValidity && !schemaValidity.classOk && (
+                <span className="mapping-explorer__schema-warning-text">Unknown in schema</span>
+              )}
+            </div>
+            <div className="mapping-explorer__details-row">
+              <span className="mapping-explorer__details-label">Slot:</span>
+              <code className="mapping-explorer__details-value">{field.targetSlot}</code>
+              {schemaValidity && !schemaValidity.slotOk && (
+                <span className="mapping-explorer__schema-warning-text">Unknown in schema</span>
+              )}
+            </div>
+            <div className="mapping-explorer__details-row">
+              <span className="mapping-explorer__details-label">Required:</span>
+              <span className={`mapping-explorer__details-value ${field.required ? 'mapping-explorer__details-value--required' : ''}`}>
+                {field.required ? 'Yes' : 'No'}
+              </span>
+            </div>
           </div>
-          <div className="mapping-explorer__details-row">
+        )}
-            <span className="mapping-explorer__details-label">Slot:</span>
-            <code className="mapping-explorer__details-value">{field.targetSlot}</code>
-          </div>
-          <div className="mapping-explorer__details-row">
-            <span className="mapping-explorer__details-label">Required:</span>
-            <span className={`mapping-explorer__details-value ${field.required ? 'mapping-explorer__details-value--required' : ''}`}>
-              {field.required ? 'Yes' : 'No'}
-            </span>
-          </div>
-        </div>
-      )}
 
       {viewMode === 'typedb' && field.typedbEntity && (
         <div className="mapping-explorer__details-section">
@@ -522,6 +545,8 @@ export const MappingExplorer: React.FC<MappingExplorerProps> = ({ language = 'en
   const [viewMode, setViewMode] = useState<'linkml' | 'typedb' | 'rdf'>('linkml');
   const [isExporting, setIsExporting] = useState(false);
 
+  const [schemaIndex, setSchemaIndex] = useState<{ classes: Set<string>; slots: Set<string>; generated?: string } | null>(null);
+
   // Reset selection when data source changes
   useEffect(() => {
     const defaultSource = dataSource === 'custodian' ? 'ghcid' : 'profile_identity';
@@ -539,6 +564,56 @@ export const MappingExplorer: React.FC<MappingExplorerProps> = ({ language = 'en
   const currentMappings = useMemo(() => getMappingsForDataSource(dataSource), [dataSource]);
   const currentCategories = useMemo(() => getCategoriesForDataSource(dataSource), [dataSource]);
 
+  // Load LinkML schema manifest for validation (best-effort)
+  useEffect(() => {
+    let cancelled = false;
+    (async () => {
+      try {
+        const manifest = await loadManifest();
+        if (!manifest || cancelled) return;
+
+        const classes = new Set<string>();
+        const slots = new Set<string>();
+        for (const category of manifest.categories ?? []) {
+          if (category.name === 'class') {
+            for (const f of category.files ?? []) classes.add(f.name);
+          }
+          if (category.name === 'slot') {
+            for (const f of category.files ?? []) slots.add(f.name);
+          }
+        }
+
+        setSchemaIndex({ classes, slots, generated: manifest.generated });
+      } catch (e) {
+        // Ignore - mapping explorer should remain usable without schema assets
+        console.warn('[MappingExplorer] Could not load LinkML manifest for validation', e);
+      }
+    })();
+
+    return () => {
+      cancelled = true;
+    };
+  }, []);
+
+  const getFieldSchemaValidity = useCallback((field: FieldMapping) => {
+    if (!schemaIndex) return { classOk: true, slotOk: true };
+    const classOk = field.targetClass ? schemaIndex.classes.has(field.targetClass) : true;
+    const slotOk = field.targetSlot ? schemaIndex.slots.has(field.targetSlot) : true;
+    return { classOk, slotOk };
+  }, [schemaIndex]);
+
+  const schemaMismatchCounts = useMemo(() => {
+    if (!schemaIndex) return { invalidFields: 0 };
+    let invalidFields = 0;
+    currentMappings.forEach(m => {
+      m.fields.forEach(f => {
+        const v = getFieldSchemaValidity(f);
+        if (!v.classOk || !v.slotOk) invalidFields++;
+      });
+    });
+    return { invalidFields };
+  }, [schemaIndex, currentMappings, getFieldSchemaValidity]);
+
   // Status counts for statistics panel
   const statusCounts = useMemo((): StatusCounts => {
     const counts: StatusCounts = { mapped: 0, partial: 0, out_of_scope: 0, future: 0 };
@@ -849,6 +924,15 @@ export const MappingExplorer: React.FC<MappingExplorerProps> = ({ language = 'en
             <Download size={16} />
             {isExporting ? t('exporting') : t('exportLinkMLMap')}
           </button>
+
+          {schemaIndex && (
+            <div
+              className={`mapping-explorer__schema-status ${schemaMismatchCounts.invalidFields > 0 ? 'mapping-explorer__schema-status--warn' : ''}`}
+              title={`LinkML schema manifest loaded${schemaIndex.generated ? ` (generated: ${schemaIndex.generated})` : ''}`}
+            >
+              Schema: {schemaMismatchCounts.invalidFields === 0 ? 'OK' : `${schemaMismatchCounts.invalidFields} invalid targets`}
+            </div>
+          )}
         </div>
       </div>
 
@@ -872,6 +956,7 @@ export const MappingExplorer: React.FC<MappingExplorerProps> = ({ language = 'en
                   isSelected={selectedSource === mapping.sourceBlock}
                   selectedField={selectedField}
                   dataSource={dataSource}
+                  getFieldSchemaValidity={getFieldSchemaValidity}
                   onToggle={() => toggleSource(mapping.sourceBlock)}
                   onSelectSource={() => handleSelectSource(mapping.sourceBlock)}
                   onSelectField={handleSelectField}
@@ -913,6 +998,7 @@ export const MappingExplorer: React.FC<MappingExplorerProps> = ({ language = 'en
               field={selectedField}
               sourceBlock={selectedSource}
               viewMode={viewMode}
+              schemaValidity={getFieldSchemaValidity(selectedField)}
               translations={{
                 copyPath: t('copyPath'),
                 copyRdf: t('copyRdf'),

frontend/src/lib/linkml/custodian-data-mappings.ts

@@ -508,7 +508,7 @@ Example: NL-NH-AMS-M-RM (Rijksmuseum, Amsterdam, Netherlands)
 GHCIDs are deterministically generated and hashed to multiple UUID formats
 for different use cases (UUID v5 for primary, UUID v8 for future-proofing).
     `.trim(),
-    linkmlClass: 'GHCID',
+    linkmlClass: 'GHCIdentifier',
     typedbEntity: 'ghcid',
     provenance: {
       sourceType: 'computed',
@@ -518,8 +518,8 @@ for different use cases (UUID v5 for primary, UUID v8 for future-proofing).
       {
         sourcePath: 'ghcid.ghcid_current',
         sourceDescription: 'Current GHCID string',
-        targetClass: 'GHCID',
+        targetClass: 'GHCIdentifier',
-        targetSlot: 'identified_by',
+        targetSlot: 'has_value',
         transformation: 'direct',
         typedbEntity: 'ghcid',
         typedbAttribute: 'ghcid-string',
@@ -534,8 +534,8 @@ for different use cases (UUID v5 for primary, UUID v8 for future-proofing).
       {
         sourcePath: 'ghcid.ghcid_uuid',
         sourceDescription: 'UUID v5 derived from GHCID string',
-        targetClass: 'GHCID',
+        targetClass: 'GHCIdentifier',
-        targetSlot: 'identified_by',
+        targetSlot: 'has_value',
         transformation: 'computed',
         transformationDetails: 'UUID v5 generated using SHA-1 hash of GHCID string with heritage namespace',
         typedbEntity: 'ghcid',
@@ -550,8 +550,8 @@ for different use cases (UUID v5 for primary, UUID v8 for future-proofing).
       {
         sourcePath: 'ghcid.ghcid_numeric',
         sourceDescription: '64-bit numeric ID for database optimization',
-        targetClass: 'GHCID',
+        targetClass: 'GHCIdentifier',
-        targetSlot: 'identified_by',
+        targetSlot: 'has_value',
         transformation: 'computed',
         transformationDetails: 'SHA-256 hash truncated to 64-bit integer',
         typedbEntity: 'ghcid',
@@ -561,8 +561,8 @@ for different use cases (UUID v5 for primary, UUID v8 for future-proofing).
       {
         sourcePath: 'ghcid.location_resolution',
         sourceDescription: 'GeoNames resolution metadata',
-        targetClass: 'GHCID',
+        targetClass: 'LocationResolution',
-        targetSlot: 'has_location',
+        targetSlot: 'based_on',
         transformation: 'nested',
         transformationDetails: 'Maps to LocationResolution class with GeoNames provenance',
         typedbEntity: 'location-resolution',
@@ -784,7 +784,7 @@ Each enrichment creates a CustodianObservation with google_maps_api provenance.
       apiEndpoint: 'https://maps.googleapis.com/maps/api/place/',
       updateFrequency: 'On-demand',
     },
-    generatedClasses: ['Place', 'GeoCoordinates', 'OpeningHours'],
+    generatedClasses: ['Place', 'SourceCoordinates', 'OpeningHours'],
     fields: [
       {
         sourcePath: 'google_maps_enrichment.place_id',
@@ -804,7 +804,7 @@ Each enrichment creates a CustodianObservation with google_maps_api provenance.
       {
         sourcePath: 'google_maps_enrichment.coordinates.latitude',
         sourceDescription: 'Latitude coordinate',
-        targetClass: 'GeoCoordinates',
+        targetClass: 'SourceCoordinates',
         targetSlot: 'has_latitude',
         transformation: 'nested',
         typedbEntity: 'geo-coordinates',
@@ -820,7 +820,7 @@ Each enrichment creates a CustodianObservation with google_maps_api provenance.
       {
         sourcePath: 'google_maps_enrichment.coordinates.longitude',
         sourceDescription: 'Longitude coordinate',
-        targetClass: 'GeoCoordinates',
+        targetClass: 'SourceCoordinates',
         targetSlot: 'has_longitude',
         transformation: 'nested',
         typedbEntity: 'geo-coordinates',
@@ -964,7 +964,7 @@ Creates a CustodianObservation with wikidata_api provenance.
       dataTier: 'TIER_3_CROWD_SOURCED',
       apiEndpoint: 'https://www.wikidata.org/wiki/Special:EntityData/',
     },
-    generatedClasses: ['WikidataEntity', 'Sitelink'],
+    generatedClasses: ['WikidataEntity', 'WikidataSitelinks'],
     fields: [
       {
         sourcePath: 'wikidata_enrichment.entity_id',
@@ -1006,7 +1006,7 @@ Creates a CustodianObservation with wikidata_api provenance.
       {
         sourcePath: 'wikidata_enrichment.sitelinks',
         sourceDescription: 'Links to Wikipedia articles',
-        targetClass: 'Sitelink',
+        targetClass: 'WikidataSitelinks',
         targetSlot: 'has_url',
         transformation: 'array_map',
         transformationDetails: 'Each sitelink maps to Wikipedia article URL',
@@ -1033,7 +1033,7 @@ Creates a CustodianObservation with wikidata_api provenance.
       {
         sourcePath: 'wikidata_enrichment.coordinates',
         sourceDescription: 'Geographic coordinates from Wikidata (P625)',
-        targetClass: 'GeoCoordinates',
+        targetClass: 'WikidataCoordinates',
         targetSlot: 'has_coordinates',
         transformation: 'nested',
         typedbEntity: 'geo-coordinates',
@@ -1104,7 +1104,7 @@ This is the single source of truth for the custodian's physical location.
         sourcePath: 'location.city',
         sourceDescription: 'City name',
         targetClass: 'Place',
-        targetSlot: 'cover_place',
+        targetSlot: 'has_locality',
         transformation: 'direct',
         typedbEntity: 'place',
         typedbAttribute: 'city',
@@ -1119,7 +1119,7 @@ This is the single source of truth for the custodian's physical location.
         sourcePath: 'location.country',
         sourceDescription: 'ISO 3166-1 alpha-2 country code',
         targetClass: 'Place',
-        targetSlot: 'cover_country',
+        targetSlot: 'in_country',
         transformation: 'lookup',
         transformationDetails: 'Maps to CountryCodeEnum',
         typedbEntity: 'place',
@@ -1139,7 +1139,7 @@ This is the single source of truth for the custodian's physical location.
         sourcePath: 'location.region',
         sourceDescription: 'Region/province name',
         targetClass: 'Place',
-        targetSlot: 'region',
+        targetSlot: 'has_geographic_subdivision',
         transformation: 'direct',
         typedbEntity: 'place',
         typedbAttribute: 'region',
@@ -1214,7 +1214,7 @@ All claims must have XPath provenance per Rule 6.
         sourcePath: 'web_enrichment.source_url',
         sourceDescription: 'URL of scraped page',
         targetClass: 'WebObservation',
-        targetSlot: 'source_url',
+        targetSlot: 'retrieved_from',
         transformation: 'direct',
         typedbEntity: 'web-observation',
         typedbAttribute: 'source-url',
@@ -1226,7 +1226,7 @@ All claims must have XPath provenance per Rule 6.
         sourcePath: 'web_enrichment.retrieved_on',
         sourceDescription: 'Timestamp when page was archived',
         targetClass: 'WebObservation',
-        targetSlot: 'retrieved_on',
+        targetSlot: 'retrieved_at',
         transformation: 'temporal',
         typedbEntity: 'web-observation',
         typedbAttribute: 'retrieved-on',
@@ -1326,7 +1326,7 @@ Claims without XPath provenance are fabricated and must be removed per Rule 6.
         sourcePath: 'web_claims[].source_url',
         sourceDescription: 'URL where claim was extracted',
         targetClass: 'WebClaim',
-        targetSlot: 'source_url',
+        targetSlot: 'retrieved_from',
         transformation: 'direct',
         typedbEntity: 'web-claim',
         typedbAttribute: 'source-url',
@@ -2222,7 +2222,7 @@ Classes: RegionalArchive, ProvincialArchive, ProvincialHistoricalArchive,
         sourcePath: 'region',
         sourceDescription: 'Geographic region served',
         targetClass: 'RegionalArchive',
-        targetSlot: 'region',
+        targetSlot: 'cover_geographic_subdivision',
         transformation: 'direct',
         typedbEntity: 'regional-archive',
         typedbAttribute: 'region',
@@ -3500,7 +3500,7 @@ Supports:
         sourcePath: 'person.experience[].role',
         sourceDescription: 'Job title/role',
         targetClass: 'WorkExperience',
-        targetSlot: 'role_title',
+        targetSlot: 'has_position',
         transformation: 'direct',
         typedbEntity: 'work-experience',
         typedbAttribute: 'role-title',
@@ -3510,8 +3510,8 @@ Supports:
       {
         sourcePath: 'person.education[].institution',
         sourceDescription: 'Educational institution',
-        targetClass: 'EducationCredential',
+        targetClass: 'Education',
-        targetSlot: 'affiliated_with',
+        targetSlot: 'has_label',
         transformation: 'direct',
         typedbEntity: 'education-credential',
         typedbAttribute: 'institution',
@@ -3520,7 +3520,7 @@ Supports:
       },
     ],
     generatedClasses: [
-      'WorkExperience', 'EducationCredential', 'StaffRole', 'StaffRoles',
+      'WorkExperience', 'Education', 'StaffRole', 'StaffRoles',
     ],
     exampleYaml: `
 # Work and education
@@ -3645,7 +3645,7 @@ Includes:
       {
         sourcePath: 'api_endpoints.iiif',
         sourceDescription: 'IIIF Image API',
-        targetClass: 'IIPImageServer',
+        targetClass: 'IIIF',
         targetSlot: 'has_url',
         transformation: 'direct',
         typedbEntity: 'iip-image-server',
@@ -3656,7 +3656,7 @@ Includes:
     ],
     generatedClasses: [
       'DataServiceEndpoint', 'OAIPMHEndpoint', 'SearchAPI', 'FileAPI', 'EADDownload',
-      'METSAPI', 'IIPImageServer', 'InternetOfThings',
+      'METSAPI', 'IIIF', 'InternetOfThings',
     ],
     exampleYaml: `
 # API endpoints
@@ -4208,7 +4208,7 @@ Includes:
         sourcePath: 'funding.agendas',
         sourceDescription: 'Funding agendas',
         targetClass: 'FundingAgenda',
-        targetSlot: 'related_agenda',
+        targetSlot: 'has_detail',
         transformation: 'array_direct',
         typedbEntity: 'funding-agenda',
         typedbAttribute: 'agenda-name',
@@ -4797,7 +4797,7 @@ location, and organizational metadata like company size and industry.
 This data is crucial for understanding a person's professional
 trajectory and their experience in heritage-related roles.
     `.trim(),
-    linkmlClass: 'CareerPosition',
+    linkmlClass: 'WorkExperience',
     typedbEntity: 'career-position',
     provenance: {
       sourceType: 'external_api',
@@ -4807,8 +4807,8 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].organization',
         sourceDescription: 'Employer organization name',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
-        targetSlot: 'affiliated_with',
+        targetSlot: 'employed_by',
         typedbAttribute: 'organization-name',
         rdfPredicate: 'schema:worksFor',
         transformation: 'direct',
@@ -4818,7 +4818,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].organization_linkedin',
         sourceDescription: 'LinkedIn URL for organization',
-        targetClass: 'CareerPosition',
+        targetClass: 'Employer',
         targetSlot: 'has_url',
         typedbAttribute: 'organization-linkedin-url',
         rdfPredicate: 'schema:sameAs',
@@ -4829,8 +4829,8 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].role',
         sourceDescription: 'Job title/role',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
-        targetSlot: 'has_role',
+        targetSlot: 'has_position',
         typedbAttribute: 'role-title',
         rdfPredicate: 'schema:jobTitle',
         transformation: 'direct',
@@ -4840,8 +4840,8 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].role_english',
         sourceDescription: 'English translation of role',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
-        targetSlot: 'has_role',
+        targetSlot: 'has_position',
         typedbAttribute: 'role-title-english',
         rdfPredicate: 'schema:jobTitle',
         transformation: 'direct',
@@ -4851,7 +4851,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].dates',
         sourceDescription: 'Employment date range',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'temporal_extent',
         typedbAttribute: 'date-range',
         rdfPredicate: 'schema:temporalCoverage',
@@ -4862,7 +4862,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].duration',
         sourceDescription: 'Employment duration',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'temporal_extent',
         typedbAttribute: 'duration',
         rdfPredicate: 'schema:duration',
@@ -4873,7 +4873,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].location',
         sourceDescription: 'Work location',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'has_location',
         typedbAttribute: 'work-location',
         rdfPredicate: 'schema:workLocation',
@@ -4884,7 +4884,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].current',
         sourceDescription: 'Is current position',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'current',
         typedbAttribute: 'is-current',
         rdfPredicate: 'schema:currentPosition',
@@ -4895,7 +4895,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].company_size',
         sourceDescription: 'Company employee count range',
-        targetClass: 'CareerPosition',
+        targetClass: 'Employer',
         targetSlot: 'has_detail',
         typedbAttribute: 'company-size',
         rdfPredicate: 'schema:numberOfEmployees',
@@ -4906,7 +4906,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].company_founded',
         sourceDescription: 'Year company was founded',
-        targetClass: 'CareerPosition',
+        targetClass: 'Employer',
         targetSlot: 'founded_through',
         typedbAttribute: 'company-founded-year',
         rdfPredicate: 'schema:foundingDate',
@@ -4917,7 +4917,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].company_type',
         sourceDescription: 'Type of company',
-        targetClass: 'CareerPosition',
+        targetClass: 'Employer',
         targetSlot: 'has_type',
         typedbAttribute: 'company-type',
         rdfPredicate: 'schema:additionalType',
@@ -4928,7 +4928,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].industry',
         sourceDescription: 'Industry sector',
-        targetClass: 'CareerPosition',
+        targetClass: 'Employer',
         targetSlot: 'has_domain',
         typedbAttribute: 'industry',
         rdfPredicate: 'schema:industry',
@@ -4939,7 +4939,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].department',
         sourceDescription: 'Department within organization',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'department_of',
         typedbAttribute: 'department',
         rdfPredicate: 'schema:department',
@@ -4950,7 +4950,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].level',
         sourceDescription: 'Seniority level',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'has_level',
         typedbAttribute: 'seniority-level',
         rdfPredicate: 'schema:occupationalCategory',
@@ -4961,7 +4961,7 @@ trajectory and their experience in heritage-related roles.
       {
         sourcePath: 'profile_data.career_history[].description',
         sourceDescription: 'Role description',
-        targetClass: 'CareerPosition',
+        targetClass: 'WorkExperience',
         targetSlot: 'has_description',
         typedbAttribute: 'role-description',
         rdfPredicate: 'schema:description',
@@ -5175,7 +5175,7 @@ current institution, sector role, and years of heritage experience.
 This provides a quick overview of where the person fits
 within the heritage ecosystem.
     `.trim(),
-    linkmlClass: 'HeritageRelevance',
+    linkmlClass: 'HeritageRelevanceAssessment',
     typedbEntity: 'heritage-relevance',
     provenance: {
       sourceType: 'computed',
@@ -5185,7 +5185,7 @@ within the heritage ecosystem.
       {
         sourcePath: 'heritage_sector_relevance.heritage_type',
         sourceDescription: 'Heritage type code',
-        targetClass: 'HeritageRelevance',
+        targetClass: 'HeritageRelevanceAssessment',
         targetSlot: 'has_type',
         typedbAttribute: 'heritage-type-code',
         rdfPredicate: 'glam:heritageType',
@@ -5196,8 +5196,8 @@ within the heritage ecosystem.
       {
         sourcePath: 'heritage_sector_relevance.heritage_type_label',
         sourceDescription: 'Heritage type label',
-        targetClass: 'HeritageRelevance',
+        targetClass: 'HeritageRelevanceAssessment',
-        targetSlot: 'has_label',
+        targetSlot: 'has_note',
         typedbAttribute: 'heritage-type-label',
         rdfPredicate: 'rdfs:label',
         transformation: 'direct',
@@ -5207,8 +5207,8 @@ within the heritage ecosystem.
       {
         sourcePath: 'heritage_sector_relevance.current_institution',
         sourceDescription: 'Current heritage institution',
-        targetClass: 'HeritageRelevance',
+        targetClass: 'HeritageRelevanceAssessment',
-        targetSlot: 'affiliated_with',
+        targetSlot: 'has_note',
         typedbAttribute: 'current-institution',
         rdfPredicate: 'schema:worksFor',
         transformation: 'direct',
@@ -5218,7 +5218,7 @@ within the heritage ecosystem.
       {
         sourcePath: 'heritage_sector_relevance.institution_type',
         sourceDescription: 'Type of institution',
-        targetClass: 'HeritageRelevance',
+        targetClass: 'HeritageRelevanceAssessment',
         targetSlot: 'has_type',
         typedbAttribute: 'institution-type',
         rdfPredicate: 'schema:additionalType',
@@ -5229,8 +5229,8 @@ within the heritage ecosystem.
       {
         sourcePath: 'heritage_sector_relevance.sector_role',
         sourceDescription: 'Role within heritage sector',
-        targetClass: 'HeritageRelevance',
+        targetClass: 'HeritageRelevanceAssessment',
-        targetSlot: 'has_role',
+        targetSlot: 'has_note',
         typedbAttribute: 'sector-role',
         rdfPredicate: 'schema:jobTitle',
         transformation: 'direct',
@@ -5240,8 +5240,8 @@ within the heritage ecosystem.
       {
         sourcePath: 'heritage_sector_relevance.years_in_heritage',
         sourceDescription: 'Years of heritage experience',
-        targetClass: 'HeritageRelevance',
+        targetClass: 'HeritageRelevanceAssessment',
-        targetSlot: 'has_detail',
+        targetSlot: 'has_score',
         typedbAttribute: 'years-in-heritage',
         rdfPredicate: 'schema:experienceYears',
         transformation: 'direct',
@@ -5273,7 +5273,7 @@ Extracted from full career history with relevance annotations.
 Includes both current and past positions at heritage institutions
 with notes explaining their relevance to the GLAM sector.
     `.trim(),
-    linkmlClass: 'HeritageExperience',
+    linkmlClass: 'WorkExperience',
     typedbEntity: 'heritage-experience',
     provenance: {
       sourceType: 'computed',
@@ -5283,8 +5283,8 @@ with notes explaining their relevance to the GLAM sector.
       {
         sourcePath: 'profile_data.heritage_relevant_experience[].organization',
         sourceDescription: 'Heritage organization name',
-        targetClass: 'HeritageExperience',
+        targetClass: 'WorkExperience',
-        targetSlot: 'affiliated_with',
+        targetSlot: 'employed_by',
         typedbAttribute: 'heritage-org-name',
         rdfPredicate: 'schema:worksFor',
         transformation: 'direct',
@@ -5294,8 +5294,8 @@ with notes explaining their relevance to the GLAM sector.
       {
         sourcePath: 'profile_data.heritage_relevant_experience[].role',
         sourceDescription: 'Role at heritage organization',
-        targetClass: 'HeritageExperience',
+        targetClass: 'WorkExperience',
-        targetSlot: 'has_role',
+        targetSlot: 'has_position',
         typedbAttribute: 'heritage-role',
         rdfPredicate: 'schema:jobTitle',
         transformation: 'direct',
@@ -5305,8 +5305,8 @@ with notes explaining their relevance to the GLAM sector.
       {
         sourcePath: 'profile_data.heritage_relevant_experience[].relevance',
         sourceDescription: 'Relevance explanation',
-        targetClass: 'HeritageExperience',
+        targetClass: 'WorkExperience',
-        targetSlot: 'has_significance',
+        targetSlot: 'has_note',
         typedbAttribute: 'relevance-notes',
         rdfPredicate: 'schema:description',
         transformation: 'direct',
@@ -5316,7 +5316,7 @@ with notes explaining their relevance to the GLAM sector.
       {
         sourcePath: 'profile_data.heritage_relevant_experience[].current',
         sourceDescription: 'Is current position',
-        targetClass: 'HeritageExperience',
+        targetClass: 'WorkExperience',
         targetSlot: 'current',
         typedbAttribute: 'is-current-heritage',
         rdfPredicate: 'schema:currentPosition',
@@ -5325,7 +5325,7 @@ with notes explaining their relevance to the GLAM sector.
         notes: 'Whether this is a current position',
       },
     ],
-    generatedClasses: ['HeritageExperience'],
+    generatedClasses: ['WorkExperience'],
     exampleYaml: `
 profile_data:
   heritage_relevant_experience:
@@ -5354,7 +5354,7 @@ role title, and heritage classification.
 These affiliations enable network analysis across the heritage
 sector workforce.
     `.trim(),
-    linkmlClass: 'Affiliation',
+    linkmlClass: 'Membership',
     typedbEntity: 'affiliation',
     provenance: {
       sourceType: 'computed',
@@ -5364,7 +5364,7 @@ sector workforce.
       {
         sourcePath: 'affiliations[].custodian_name',
         sourceDescription: 'Heritage custodian name',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
         targetSlot: 'has_name',
         typedbAttribute: 'custodian-name',
         rdfPredicate: 'schema:memberOf',
@@ -5375,8 +5375,8 @@ sector workforce.
       {
         sourcePath: 'affiliations[].custodian_slug',
         sourceDescription: 'Custodian identifier slug',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
-        targetSlot: 'identified_by',
+        targetSlot: 'has_slug',
         typedbAttribute: 'custodian-slug',
         rdfPredicate: 'schema:identifier',
         transformation: 'direct',
@@ -5386,8 +5386,8 @@ sector workforce.
       {
         sourcePath: 'affiliations[].role_title',
         sourceDescription: 'Role at custodian',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
-        targetSlot: 'role_title',
+        targetSlot: 'has_role',
         typedbAttribute: 'affiliation-role',
         rdfPredicate: 'schema:jobTitle',
         transformation: 'direct',
@@ -5397,8 +5397,8 @@ sector workforce.
       {
         sourcePath: 'affiliations[].heritage_relevant',
         sourceDescription: 'Is heritage relevant',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
-        targetSlot: 'has_significance',
+        targetSlot: 'has_note',
         typedbAttribute: 'is-heritage-relevant',
         rdfPredicate: 'glam:heritageRelevant',
         transformation: 'direct',
@@ -5408,7 +5408,7 @@ sector workforce.
       {
         sourcePath: 'affiliations[].heritage_type',
         sourceDescription: 'Heritage type code',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
         targetSlot: 'has_type',
         typedbAttribute: 'affiliation-heritage-type',
         rdfPredicate: 'glam:heritageType',
@@ -5419,7 +5419,7 @@ sector workforce.
       {
         sourcePath: 'affiliations[].current',
         sourceDescription: 'Is current affiliation',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
         targetSlot: 'current',
         typedbAttribute: 'is-current-affiliation',
         rdfPredicate: 'schema:currentPosition',
@@ -5430,7 +5430,7 @@ sector workforce.
       {
         sourcePath: 'affiliations[].observed_on',
         sourceDescription: 'Observation timestamp',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
         targetSlot: 'observed_in',
         typedbAttribute: 'observed-on',
         rdfPredicate: 'prov:generatedAtTime',
@@ -5441,8 +5441,8 @@ sector workforce.
       {
         sourcePath: 'affiliations[].source_url',
         sourceDescription: 'Source URL for affiliation',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
-        targetSlot: 'source_url',
+        targetSlot: 'retrieved_from',
         typedbAttribute: 'affiliation-source-url',
         rdfPredicate: 'prov:wasDerivedFrom',
         transformation: 'direct',
@@ -5450,7 +5450,7 @@ sector workforce.
         notes: 'URL where affiliation was discovered',
       },
     ],
-    generatedClasses: ['Affiliation'],
+    generatedClasses: ['Membership'],
     exampleYaml: `
 affiliations:
   - custodian_name: Nationaal Archief
@@ -5478,7 +5478,7 @@ and custodian records (heritage institution YAML files).
 These links enable navigation between person profiles and
 the institutions they work for.
     `.trim(),
-    linkmlClass: 'LinkedRecords',
+    linkmlClass: 'FileLocation',
     typedbEntity: 'linked-records',
     provenance: {
       sourceType: 'computed',
@@ -5488,8 +5488,8 @@ the institutions they work for.
       {
         sourcePath: 'linked_records.staff_record.file',
         sourceDescription: 'Staff record file path',
-        targetClass: 'LinkedRecords',
+        targetClass: 'FileLocation',
-        targetSlot: 'has_file_location',
+        targetSlot: 'has_value',
         typedbAttribute: 'staff-record-path',
         rdfPredicate: 'prov:wasDerivedFrom',
         transformation: 'direct',
@@ -5499,8 +5499,8 @@ the institutions they work for.
       {
         sourcePath: 'linked_records.staff_record.staff_id',
         sourceDescription: 'Staff record ID',
-        targetClass: 'LinkedRecords',
+        targetClass: 'Identifier',
-        targetSlot: 'staff_id',
+        targetSlot: 'has_value',
         typedbAttribute: 'staff-id',
         rdfPredicate: 'schema:identifier',
         transformation: 'direct',
@@ -5510,8 +5510,8 @@ the institutions they work for.
       {
         sourcePath: 'linked_records.custodian_record.ghcid',
         sourceDescription: 'Custodian GHCID',
-        targetClass: 'LinkedRecords',
+        targetClass: 'GHCIdentifier',
-        targetSlot: 'identified_by',
+        targetSlot: 'has_value',
         typedbAttribute: 'linked-ghcid',
         rdfPredicate: 'glam:ghcid',
         transformation: 'direct',
@@ -5521,7 +5521,7 @@ the institutions they work for.
       {
         sourcePath: 'linked_records.custodian_record.notes',
         sourceDescription: 'Custodian record notes',
-        targetClass: 'LinkedRecords',
+        targetClass: 'FileLocation',
         targetSlot: 'has_note',
         typedbAttribute: 'custodian-notes',
         rdfPredicate: 'schema:description',
@@ -5530,7 +5530,7 @@ the institutions they work for.
         notes: 'Additional notes about the custodian link',
       },
     ],
-    generatedClasses: ['LinkedRecords'],
+    generatedClasses: ['FileLocation'],
     exampleYaml: `
 linked_records:
   staff_record:
@@ -5555,7 +5555,7 @@ with confidence scores indicating reliability.
 
 Also includes profile photo URLs and external lookup service links.
     `.trim(),
-    linkmlClass: 'ContactData',
+    linkmlClass: 'ContactDetails',
     typedbEntity: 'contact-data',
     provenance: {
       sourceType: 'computed',
@@ -5565,7 +5565,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.provenance.source',
         sourceDescription: 'Contact data source',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_source',
         typedbAttribute: 'contact-source',
         rdfPredicate: 'prov:wasAttributedTo',
@@ -5576,7 +5576,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.emails[].email',
         sourceDescription: 'Email address',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_email_address',
         typedbAttribute: 'email-address',
         rdfPredicate: 'schema:email',
@@ -5587,7 +5587,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.emails[].type',
         sourceDescription: 'Email type',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_type',
         typedbAttribute: 'email-type',
         rdfPredicate: 'schema:contactType',
@@ -5598,7 +5598,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.emails[].confidence',
         sourceDescription: 'Email confidence score',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_confidence_measure',
         typedbAttribute: 'email-confidence',
         rdfPredicate: 'prov:confidence',
@@ -5609,7 +5609,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.emails[].verified',
         sourceDescription: 'Email verification status',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_detail',
         typedbAttribute: 'email-verified',
         rdfPredicate: 'schema:verified',
@@ -5620,7 +5620,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.profile_photo_url',
         sourceDescription: 'Profile photo URL',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_image',
         typedbAttribute: 'profile-photo',
         rdfPredicate: 'schema:image',
@@ -5631,7 +5631,7 @@ Also includes profile photo URLs and external lookup service links.
       {
         sourcePath: 'contact_data.rocketreach_url',
         sourceDescription: 'RocketReach lookup URL',
-        targetClass: 'ContactData',
+        targetClass: 'ContactDetails',
         targetSlot: 'has_url',
         typedbAttribute: 'rocketreach-url',
         rdfPredicate: 'schema:sameAs',
@@ -5640,7 +5640,7 @@ Also includes profile photo URLs and external lookup service links.
         notes: 'Link to RocketReach profile lookup',
       },
     ],
-    generatedClasses: ['ContactData'],
+    generatedClasses: ['ContactDetails'],
     exampleYaml: `
 contact_data:
   provenance:
@@ -5685,7 +5685,7 @@ reproducibility of the extraction process.
         sourcePath: 'extraction_metadata.source_file',
         sourceDescription: 'Source file path',
         targetClass: 'ExtractionMetadata',
-        targetSlot: 'source_file',
+        targetSlot: 'has_file_location',
         typedbAttribute: 'source-file-path',
         rdfPredicate: 'prov:wasDerivedFrom',
         transformation: 'direct',
@@ -5696,7 +5696,7 @@ reproducibility of the extraction process.
         sourcePath: 'extraction_metadata.staff_id',
         sourceDescription: 'Staff identifier',
         targetClass: 'ExtractionMetadata',
-        targetSlot: 'staff_id',
+        targetSlot: 'has_slug',
         typedbAttribute: 'extraction-staff-id',
         rdfPredicate: 'schema:identifier',
         transformation: 'direct',
@@ -5762,7 +5762,7 @@ reproducibility of the extraction process.
         sourcePath: 'extraction_metadata.request_id',
         sourceDescription: 'API request identifier',
         targetClass: 'ExtractionMetadata',
-        targetSlot: 'request_id',
+        targetSlot: 'has_code',
         typedbAttribute: 'api-request-id',
         rdfPredicate: 'schema:identifier',
         transformation: 'direct',
@@ -5830,7 +5830,7 @@ This follows the WebObservation pattern for verifiable data claims.
         sourcePath: 'web_claims[].source_url',
         sourceDescription: 'URL source of claim',
         targetClass: 'WebClaim',
-        targetSlot: 'source_url',
+        targetSlot: 'retrieved_from',
         typedbAttribute: 'claim-source-url',
         rdfPredicate: 'prov:wasDerivedFrom',
         transformation: 'direct',
@@ -5841,7 +5841,7 @@ This follows the WebObservation pattern for verifiable data claims.
         sourcePath: 'web_claims[].retrieved_on',
         sourceDescription: 'Retrieval timestamp',
         targetClass: 'WebClaim',
-        targetSlot: 'retrieved_on',
+        targetSlot: 'retrieved_at',
         typedbAttribute: 'claim-retrieved-on',
         rdfPredicate: 'prov:generatedAtTime',
         transformation: 'direct',
@@ -5852,7 +5852,7 @@ This follows the WebObservation pattern for verifiable data claims.
         sourcePath: 'web_claims[].retrieval_agent',
         sourceDescription: 'Agent that retrieved claim',
         targetClass: 'WebClaim',
-        targetSlot: 'retrieval_agent',
+        targetSlot: 'retrieved_by',
         typedbAttribute: 'claim-retrieval-agent',
         rdfPredicate: 'prov:wasAttributedTo',
         transformation: 'direct',
@@ -5941,7 +5941,7 @@ showing the semantic alignment between the ontologies.
         sourcePath: 'extraction_metadata.linkedin_url',
         sourceDescription: 'LinkedIn profile URL as primary source',
         targetClass: 'PersonObservation',
-        targetSlot: 'source_url',
+        targetSlot: 'retrieved_from',
         typedbAttribute: 'source-url',
         rdfPredicate: 'prov:hadPrimarySource',
         transformation: 'direct',
@@ -5952,8 +5952,8 @@ showing the semantic alignment between the ontologies.
       {
         sourcePath: 'affiliations[].role_title',
         sourceDescription: 'Role at heritage institution',
-        targetClass: 'Affiliation',
+        targetClass: 'Membership',
-        targetSlot: 'role_title',
+        targetSlot: 'has_role',
         typedbAttribute: 'role-title',
         rdfPredicate: 'pico:hasRole',
         transformation: 'direct',

frontend/src/pages/Visualize.css

@@ -1050,6 +1050,151 @@
   cursor: not-allowed;
 }
 
+/* UML Density Section */
+.uml-density-section {
+  padding: 1rem 1.5rem;
+  background: #f0f4ff;
+  border-bottom: 1px solid #4a7dff;
+}
+
+.uml-density-section h3 {
+  margin: 0 0 0.5rem 0;
+  font-size: 0.875rem;
+  color: #172a59;
+  font-weight: 600;
+}
+
+.uml-density-desc {
+  margin: 0 0 0.75rem 0;
+  font-size: 0.75rem;
+  color: #666;
+}
+
+.uml-density-options {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.uml-density-option {
+  display: flex;
+  flex-direction: column;
+  gap: 0.125rem;
+  width: 100%;
+  padding: 0.625rem 0.75rem;
+  background: white;
+  border: 1px solid #e0e0e0;
+  border-radius: 6px;
+  text-align: left;
+  cursor: pointer;
+  transition: all 0.15s ease;
+}
+
+.uml-density-option:hover {
+  border-color: #4a7dff;
+  background: #f8f9ff;
+}
+
+.uml-density-option.active {
+  border-color: #4a7dff;
+  background: #ebefff;
+}
+
+.uml-density-label {
+  font-size: 0.8125rem;
+  font-weight: 500;
+  color: #172a59;
+}
+
+.uml-density-hint {
+  font-size: 0.6875rem;
+  color: #888;
+}
+
+.uml-density-option.active .uml-density-label {
+  color: #4a7dff;
+}
+
+.uml-density-info {
+  margin: 0.625rem 0 0 0;
+  font-size: 0.75rem;
+  color: #4a7dff;
+  font-weight: 500;
+}
+
+.uml-module-picker {
+  margin-top: 0.75rem;
+}
+
+.uml-module-chips {
+  margin-top: 0.75rem;
+}
+
+.uml-module-chips-title {
+  margin: 0 0 0.375rem 0;
+  font-size: 0.75rem;
+  color: #172a59;
+  font-weight: 500;
+}
+
+.uml-module-chip-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.375rem;
+}
+
+.uml-module-chip {
+  padding: 0.35rem 0.625rem;
+  border: 1px solid #c8d4ff;
+  background: white;
+  color: #2c5ce6;
+  border-radius: 999px;
+  font-size: 0.75rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.15s ease;
+}
+
+.uml-module-chip:hover {
+  border-color: #4a7dff;
+  background: #f8f9ff;
+}
+
+.uml-module-chip.active {
+  border-color: #4a7dff;
+  background: #4a7dff;
+  color: white;
+}
+
+.uml-module-label {
+  display: block;
+  margin: 0 0 0.375rem 0;
+  font-size: 0.75rem;
+  color: #172a59;
+  font-weight: 500;
+}
+
+.uml-module-select {
+  width: 100%;
+  padding: 0.5rem;
+  border: 1px solid #c8d4ff;
+  border-radius: 4px;
+  background: white;
+  font-size: 0.8125rem;
+  color: #172a59;
+  cursor: pointer;
+}
+
+.uml-module-select:hover {
+  border-color: #4a7dff;
+}
+
+.uml-module-select:focus {
+  outline: none;
+  border-color: #4a7dff;
+  box-shadow: 0 0 0 2px rgba(74, 125, 255, 0.2);
+}
+
 /* Node Info Section */
 .node-info-section {
   padding: 1rem 1.5rem;
@@ -2346,6 +2491,85 @@ body:has(.visualize-page.is-mobile .sidebar--mobile:not(.collapsed)) {
   background: #6b9eff;
 }
 
+[data-theme="dark"] .uml-density-section {
+  background: #2d2d4a;
+  border-bottom-color: #4a7dff;
+}
+
+[data-theme="dark"] .uml-density-section h3 {
+  color: #e0e0e0;
+}
+
+[data-theme="dark"] .uml-density-desc {
+  color: #a0a0b0;
+}
+
+[data-theme="dark"] .uml-density-option {
+  background: #1e1e32;
+  border-color: #3d3d5c;
+}
+
+[data-theme="dark"] .uml-density-option:hover {
+  border-color: #4a7dff;
+  background: #2d2d4a;
+}
+
+[data-theme="dark"] .uml-density-option.active {
+  border-color: #4a7dff;
+  background: #2d2d4a;
+}
+
+[data-theme="dark"] .uml-density-label {
+  color: #e0e0e0;
+}
+
+[data-theme="dark"] .uml-density-hint {
+  color: #888;
+}
+
+[data-theme="dark"] .uml-density-option.active .uml-density-label {
+  color: #6b9eff;
+}
+
+[data-theme="dark"] .uml-density-info {
+  color: #6b9eff;
+}
+
+[data-theme="dark"] .uml-module-label {
+  color: #e0e0e0;
+}
+
+[data-theme="dark"] .uml-module-chips-title {
+  color: #e0e0e0;
+}
+
+[data-theme="dark"] .uml-module-chip {
+  background: #1e1e32;
+  border-color: #3d3d5c;
+  color: #a7c1ff;
+}
+
+[data-theme="dark"] .uml-module-chip:hover {
+  border-color: #4a7dff;
+  background: #2d2d4a;
+}
+
+[data-theme="dark"] .uml-module-chip.active {
+  border-color: #4a7dff;
+  background: #4a7dff;
+  color: white;
+}
+
+[data-theme="dark"] .uml-module-select {
+  background: #1e1e32;
+  border-color: #3d3d5c;
+  color: #e0e0e0;
+}
+
+[data-theme="dark"] .uml-module-select:hover {
+  border-color: #4a7dff;
+}
+
 /* Node Info Section */
 [data-theme="dark"] .node-info-section {
   background: #2d2d4a;

frontend/src/pages/Visualize.tsx

@@ -3,7 +3,7 @@
  * Supports both RDF (Turtle, N-Triples) and UML (Mermaid, PlantUML, GraphViz) formats
  */
 
-import React, { useState, useCallback, useRef, useEffect } from 'react';
+import React, { useState, useCallback, useRef, useEffect, useMemo } from 'react';
 import { useDatabase } from '@/hooks/useDatabase';
 import { useRdfParser } from '@/hooks/useRdfParser';
 import { useGraphData } from '@/hooks/useGraphData';
@@ -60,6 +60,100 @@ function isAdvancedRdfLayout(layout: string): layout is RdfAdvancedLayoutType {
   return ['chord', 'radial-tree', 'sankey', 'edge-bundling', 'pack', 'tree', 'sunburst'].includes(layout);
 }
 
+type UmlDensityMode = 'full' | 'streamlined' | 'module';
+type UmlModuleOption = { id: string; label: string; count: number };
+const POPULAR_UML_MODULE_IDS = ['custodian', 'legal', 'collections'];
+
+function humanizeModuleName(moduleId: string): string {
+  return moduleId
+    .replace(/_/g, ' ')
+    .replace(/\b\w/g, (c) => c.toUpperCase());
+}
+
+function buildStreamlinedUmlDiagram(diagram: UMLDiagram): UMLDiagram {
+  if (!diagram || !diagram.nodes || !diagram.links) {
+    return diagram;
+  }
+
+  const nodeCount = diagram.nodes.length;
+  if (nodeCount <= 300) {
+    return diagram;
+  }
+
+  const degree = new Map<string, number>();
+  diagram.nodes.forEach((node) => degree.set(node.id, 0));
+
+  diagram.links.forEach((link) => {
+    if (!degree.has(link.source) || !degree.has(link.target)) return;
+    degree.set(link.source, (degree.get(link.source) || 0) + 1);
+    degree.set(link.target, (degree.get(link.target) || 0) + 1);
+  });
+
+  const threshold = nodeCount > 1200 ? 3 : nodeCount > 600 ? 2 : 1;
+  const keepIds = new Set<string>();
+
+  degree.forEach((d, id) => {
+    if (d >= threshold) keepIds.add(id);
+  });
+
+  const coreAnchors = ['Custodian', 'CustodianType', 'Organization', 'Person'];
+  coreAnchors.forEach((id) => {
+    if (degree.has(id)) keepIds.add(id);
+  });
+
+  const nodes = diagram.nodes.filter((node) => keepIds.has(node.id));
+  const links = diagram.links.filter((link) => keepIds.has(link.source) && keepIds.has(link.target));
+
+  if (nodes.length < 50) {
+    return diagram;
+  }
+
+  return {
+    ...diagram,
+    nodes,
+    links,
+  };
+}
+
+function buildModuleFocusedUmlDiagram(diagram: UMLDiagram, moduleId: string): UMLDiagram {
+  if (!diagram || !diagram.nodes || !diagram.links) {
+    return diagram;
+  }
+
+  if (!moduleId || moduleId === '__all__') {
+    return diagram;
+  }
+
+  const primaryNodes = diagram.nodes.filter((node) => (node.module || 'other') === moduleId);
+  if (primaryNodes.length === 0) {
+    return diagram;
+  }
+
+  const keepIds = new Set<string>(primaryNodes.map((n) => n.id));
+
+  // Include one-hop neighbors for context around the selected module.
+  diagram.links.forEach((link) => {
+    if (keepIds.has(link.source)) keepIds.add(link.target);
+    if (keepIds.has(link.target)) keepIds.add(link.source);
+  });
+
+  let nodes = diagram.nodes.filter((node) => keepIds.has(node.id));
+  let links = diagram.links.filter((link) => keepIds.has(link.source) && keepIds.has(link.target));
+
+  // If the result is still too small, keep only direct module internals.
+  if (nodes.length < 20) {
+    const primaryIds = new Set(primaryNodes.map((n) => n.id));
+    nodes = primaryNodes;
+    links = diagram.links.filter((link) => primaryIds.has(link.source) && primaryIds.has(link.target));
+  }
+
+  return {
+    ...diagram,
+    nodes,
+    links,
+  };
+}
+
 // Bilingual text object for translations
 const TEXT = {
   // Sidebar
@@ -90,6 +184,18 @@ const TEXT = {
   refreshUml: { nl: 'UML Vernieuwen', en: 'Refresh UML' },
   refreshRdf: { nl: 'RDF Vernieuwen', en: 'Refresh RDF' },
   refreshHint: { nl: 'Haal de nieuwste versie op', en: 'Fetch the latest version' },
+  umlDensity: { nl: 'UML Weergavemodus', en: 'UML Display Mode' },
+  umlDensityDesc: { nl: 'Kies tussen volledig en gestroomlijnd overzicht', en: 'Choose between full and streamlined overview' },
+  umlModeFull: { nl: 'Volledig', en: 'Full' },
+  umlModeFullHint: { nl: 'Toon alle klassen en relaties', en: 'Show all classes and relationships' },
+  umlModeStreamlined: { nl: 'Gestroomlijnd', en: 'Streamlined' },
+  umlModeStreamlinedHint: { nl: 'Toon de belangrijkste, meest verbonden klassen', en: 'Show key, high-connectivity classes' },
+  umlModeModule: { nl: 'Module Focus', en: 'Module Focus' },
+  umlModeModuleHint: { nl: 'Toon een domein met context', en: 'Show one domain with context' },
+  umlModuleSelect: { nl: 'Module', en: 'Module' },
+  umlModuleAll: { nl: 'Alle modules', en: 'All modules' },
+  umlPopularModules: { nl: 'Populaire modules', en: 'Popular modules' },
+  umlShowingClasses: { nl: 'klassen zichtbaar', en: 'classes visible' },
   
   // View switcher
   viewUml: { nl: 'UML Weergave', en: 'UML View' },
@@ -364,6 +470,14 @@ export function Visualize() {
     }
     return null;
   });
+
+  const [umlDensityMode, setUmlDensityMode] = useState<UmlDensityMode>(() => {
+    const saved = localStorage.getItem('visualize-uml-density-mode');
+    return (saved === 'streamlined' || saved === 'module') ? saved : 'full';
+  });
+  const [selectedUmlModule, setSelectedUmlModule] = useState<string>(() => {
+    return localStorage.getItem('visualize-uml-module') || '__all__';
+  });
   
   // Dropdown state
   const [exportDropdownOpen, setExportDropdownOpen] = useState<boolean>(false);
@@ -1063,6 +1177,51 @@ export function Visualize() {
   const hasUmlContent = umlDiagram !== null;
   const hasContent = hasRdfContent || hasUmlContent;
 
+  const umlModuleOptions = useMemo<UmlModuleOption[]>(() => {
+    if (!umlDiagram) return [];
+    const counts = new Map<string, number>();
+    umlDiagram.nodes.forEach((node) => {
+      const moduleId = node.module || 'other';
+      counts.set(moduleId, (counts.get(moduleId) || 0) + 1);
+    });
+
+    const options: UmlModuleOption[] = [{ id: '__all__', label: t('umlModuleAll'), count: umlDiagram.nodes.length }];
+    const sorted = Array.from(counts.entries()).sort((a, b) => {
+      if (b[1] !== a[1]) return b[1] - a[1];
+      return a[0].localeCompare(b[0]);
+    });
+
+    sorted.forEach(([id, count]) => {
+      options.push({ id, label: humanizeModuleName(id), count });
+    });
+
+    return options;
+  }, [umlDiagram, t]);
+
+  const popularUmlModules = useMemo(() => {
+    if (!umlModuleOptions.length) return [];
+    return umlModuleOptions.filter((option) => POPULAR_UML_MODULE_IDS.includes(option.id));
+  }, [umlModuleOptions]);
+
+  useEffect(() => {
+    if (!umlModuleOptions.length) return;
+    if (umlModuleOptions.some((option) => option.id === selectedUmlModule)) return;
+
+    setSelectedUmlModule('__all__');
+    localStorage.setItem('visualize-uml-module', '__all__');
+  }, [umlModuleOptions, selectedUmlModule]);
+
+  const displayUmlDiagram = useMemo(() => {
+    if (!umlDiagram) return null;
+    if (umlDensityMode === 'streamlined') {
+      return buildStreamlinedUmlDiagram(umlDiagram);
+    }
+    if (umlDensityMode === 'module') {
+      return buildModuleFocusedUmlDiagram(umlDiagram, selectedUmlModule);
+    }
+    return umlDiagram;
+  }, [umlDiagram, umlDensityMode, selectedUmlModule]);
+
   return (
     <div className={`visualize-page ${isFullscreen ? 'fullscreen-active' : ''} ${isMobile ? 'is-mobile' : ''}`}>
       {/* Mobile overlay when sidebar is open */}
@@ -1350,6 +1509,99 @@ export function Visualize() {
           </div>
         )}
 
+        {hasUmlContent && currentCategory === 'uml' && (
+          <div className="uml-density-section">
+            <h3>{t('umlDensity')}</h3>
+            <p className="uml-density-desc">{t('umlDensityDesc')}</p>
+            <div className="uml-density-options">
+              <button
+                className={`uml-density-option ${umlDensityMode === 'full' ? 'active' : ''}`}
+                onClick={() => {
+                  setUmlDensityMode('full');
+                  localStorage.setItem('visualize-uml-density-mode', 'full');
+                }}
+              >
+                <span className="uml-density-label">{t('umlModeFull')}</span>
+                <span className="uml-density-hint">{t('umlModeFullHint')}</span>
+              </button>
+              <button
+                className={`uml-density-option ${umlDensityMode === 'streamlined' ? 'active' : ''}`}
+                onClick={() => {
+                  setUmlDensityMode('streamlined');
+                  localStorage.setItem('visualize-uml-density-mode', 'streamlined');
+                }}
+              >
+                <span className="uml-density-label">{t('umlModeStreamlined')}</span>
+                <span className="uml-density-hint">{t('umlModeStreamlinedHint')}</span>
+              </button>
+              <button
+                className={`uml-density-option ${umlDensityMode === 'module' ? 'active' : ''}`}
+                onClick={() => {
+                  setUmlDensityMode('module');
+                  localStorage.setItem('visualize-uml-density-mode', 'module');
+                }}
+              >
+                <span className="uml-density-label">{t('umlModeModule')}</span>
+                <span className="uml-density-hint">{t('umlModeModuleHint')}</span>
+              </button>
+            </div>
+            {umlDensityMode === 'module' && umlModuleOptions.length > 0 && (
+              <>
+                <div className="uml-module-chips">
+                  <p className="uml-module-chips-title">{t('umlPopularModules')}</p>
+                  <div className="uml-module-chip-row">
+                    <button
+                      className={`uml-module-chip ${selectedUmlModule === '__all__' ? 'active' : ''}`}
+                      onClick={() => {
+                        setSelectedUmlModule('__all__');
+                        localStorage.setItem('visualize-uml-module', '__all__');
+                      }}
+                    >
+                      {t('umlModuleAll')}
+                    </button>
+                    {popularUmlModules.map((option) => (
+                      <button
+                        key={option.id}
+                        className={`uml-module-chip ${selectedUmlModule === option.id ? 'active' : ''}`}
+                        onClick={() => {
+                          setSelectedUmlModule(option.id);
+                          localStorage.setItem('visualize-uml-module', option.id);
+                        }}
+                      >
+                        {option.label}
+                      </button>
+                    ))}
+                  </div>
+                </div>
+                <div className="uml-module-picker">
+                  <label htmlFor="uml-module-select" className="uml-module-label">{t('umlModuleSelect')}</label>
+                  <select
+                    id="uml-module-select"
+                    className="uml-module-select"
+                    value={selectedUmlModule}
+                    onChange={(e) => {
+                      const next = e.target.value;
+                      setSelectedUmlModule(next);
+                      localStorage.setItem('visualize-uml-module', next);
+                    }}
+                  >
+                    {umlModuleOptions.map((option) => (
+                      <option key={option.id} value={option.id}>
+                        {option.label} ({option.count.toLocaleString()})
+                      </option>
+                    ))}
+                  </select>
+                </div>
+              </>
+            )}
+            {displayUmlDiagram && umlDiagram && (
+              <p className="uml-density-info">
+                {displayUmlDiagram.nodes.length.toLocaleString()} / {umlDiagram.nodes.length.toLocaleString()} {t('umlShowingClasses')}
+              </p>
+            )}
+          </div>
+        )}
+
         {/* Graph Controls (RDF only) */}
         {hasRdfContent && currentCategory === 'rdf' && (
           <GraphControls
@@ -1814,7 +2066,7 @@ export function Visualize() {
         {!isLoading && !umlError && hasUmlContent && currentCategory === 'uml' && (
           <div className="uml-canvas">
             <UMLVisualization 
-              diagram={umlDiagram!} 
+              diagram={displayUmlDiagram || umlDiagram!} 
               width={1400} 
               height={900}
               layoutType={layoutType}

schemas/20251121/linkml/classes/BirthPlace.yaml

@@ -7,6 +7,7 @@ prefixes:
   schema: http://schema.org/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   gn: http://www.geonames.org/ontology#
+  rdac: http://rdaregistry.info/Elements/c/
   wdt: http://www.wikidata.org/prop/direct/
   dcterms: http://purl.org/dc/terms/
   prov: http://www.w3.org/ns/prov#
@@ -58,6 +59,7 @@ classes:
     close_mappings:
       - crm:E53_Place
       - gn:Feature
+      - rdac:C10009  # RDA Registry: Place (RDA Classes)
     slots:
       - has_label
       - has_name

schemas/20251121/linkml/manifest.json

@@ -1,12 +1,12 @@
 {
-  "generated": "2026-02-18T10:16:43.406Z",
+  "generated": "2026-02-18T20:43:54.475Z",
   "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 2183,
+  "totalFiles": 2187,
   "categoryCounts": {
     "main": 4,
     "class": 1377,
     "enum": 158,
-    "slot": 640,
+    "slot": 644,
     "module": 4
   },
   "categories": [
@@ -10387,6 +10387,21 @@
           "path": "modules/slots/owned_by.yaml",
           "category": "slot"
         },
+        {
+          "name": "paid_amount",
+          "path": "modules/slots/paid_amount.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "paid_from",
+          "path": "modules/slots/paid_from.yaml",
+          "category": "slot"
+        },
+        {
+          "name": "paid_to",
+          "path": "modules/slots/paid_to.yaml",
+          "category": "slot"
+        },
         {
           "name": "part_of",
           "path": "modules/slots/part_of.yaml",
@@ -10847,6 +10862,11 @@
           "path": "modules/slots/transferred.yaml",
           "category": "slot"
         },
+        {
+          "name": "transferred_from",
+          "path": "modules/slots/transferred_from.yaml",
+          "category": "slot"
+        },
         {
           "name": "transferred_to",
           "path": "modules/slots/transferred_to.yaml",

schemas/20251121/linkml/modules/classes/BiologicalObject.yaml

@@ -12,6 +12,7 @@ prefixes:
   gbif: http://rs.gbif.org/terms/
   aat: http://vocab.getty.edu/aat/
 imports:
+  - ./ExhibitedObject
   - linkml:types
   - ../enums/PreservationMethodEnum
   - ../metadata
@@ -47,6 +48,7 @@ imports:
 default_prefix: hc
 classes:
   BiologicalObject:
+    is_a: ExhibitedObject
     class_uri: crm:E20_Biological_Object
     description: >-
       Natural specimen or organism-derived item held in a heritage collection, with associated taxonomic identification and preservation metadata.
@@ -397,29 +399,64 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: https://nde.nl/ontology/hc/taxon/raphus-cucullatus
+    broad_mappings:
+      - crm:E20_Biological_Object
+    close_mappings:
+      - dwc:Occurrence
+      - gbif:Specimen
+    related_mappings:
+      - crm:E19_Physical_Object
+      - crm:E22_Human-Made_Object
+      - schema:Taxon
 
-        predicate: EXACT_SYNONYM
+    slots:
+      - identified_by
+      - has_label
+      - has_name
+      - has_rank
+      - has_authority
+      - commented_on
+      - identified_through
+      - has_specimen
+      - symbolize
+      - has_status
+      - has_gender
+      - has_stage
+      - contain
+      - has_quantity
+      - has_method
+      - has_detail
+      - prepared_on
+      - prepared_by
+      - acquired_through
+      - in_place
+      - describe
+      - acquired_by
+      - has_habitat
+      - has_hypernym
+      - listed_in
+      - has_provenance
+      - has_type
 
-        in_language: zh
+    slot_usage:
-#         range: string # uriorcurie
+      identified_by:
         multivalued: true
         inlined: false # Fixed invalid inline for primitive type
         inlined_as_list: false # Fixed invalid inline for primitive type
         required: false
         any_of:
-        - range: FieldNumber
+          - range: FieldNumber
-        - range: BOLDIdentifier
+          - range: BOLDIdentifier
-        - range: WikiDataIdentifier
+          - range: WikiDataIdentifier
-        - range: string # uriorcurie
+          - range: string # uriorcurie
         examples:
-        - value:
+          - value:
-            has_type: FieldNumber
+              has_type: FieldNumber
-        - value:
+          - value:
-            id: https://nde.nl/ontology/hc/bold-id/NLNAT001-21
+              id: https://nde.nl/ontology/hc/bold-id/NLNAT001-21
-            has_type: BOLDIdentifier
+              has_type: BOLDIdentifier
-        - value:
+          - value:
-            has_type: WikiDataIdentifier
+              has_type: WikiDataIdentifier
       has_label:
         range: TaxonName
         inlined: true

schemas/20251121/linkml/modules/classes/Documentation.yaml

@@ -36,195 +36,81 @@ classes:
       zh: >-
         描述平台界面、操作程序或用户实施指南的技术参考资料。
     structured_aliases:
-
       - literal_form: documentatie
-
         predicate: EXACT_SYNONYM
-
         in_language: nl
-
       - literal_form: technische handleiding
-
         predicate: EXACT_SYNONYM
-
         in_language: nl
-
       - literal_form: Dokumentation
-
         predicate: EXACT_SYNONYM
-
         in_language: de
-
       - literal_form: technische Anleitung
-
         predicate: EXACT_SYNONYM
-
         in_language: de
-
       - literal_form: documentation
-
         predicate: EXACT_SYNONYM
-
         in_language: fr
-
       - literal_form: guide technique
-
         predicate: EXACT_SYNONYM
-
         in_language: fr
-
       - literal_form: documentación
-
         predicate: EXACT_SYNONYM
-
         in_language: es
-
       - literal_form: guía técnica
-
         predicate: EXACT_SYNONYM
-
         in_language: es
-
       - literal_form: التوثيق
-
         predicate: EXACT_SYNONYM
-
         in_language: ar
-
       - literal_form: الدليل الفني
-
         predicate: EXACT_SYNONYM
-
         in_language: ar
-
       - literal_form: dokumentasi
-
         predicate: EXACT_SYNONYM
-
         in_language: id
-
       - literal_form: panduan teknis
-
         predicate: EXACT_SYNONYM
-
         in_language: id
-
       - literal_form: 文档
-
         predicate: EXACT_SYNONYM
-
         in_language: zh
-
       - literal_form: 技术指南
-
         predicate: EXACT_SYNONYM
-
         in_language: zh
 
-      - literal_form: documentation
+    broad_mappings:
+      - schema:TechArticle
+      - foaf:Document
+    close_mappings:
+      - crm:E73_Information_Object
 
-        predicate: EXACT_SYNONYM
+    slots:
+      - identified_by
+      - has_label
+      - has_description
+      - temporal_extent
 
-        in_language: zh
+    slot_usage:
-
+      identified_by:
-      - literal_form: technical guide
+        range: uri
-
+        required: true
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: API reference
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: user manual
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: operational guide
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: schema:CreativeWork
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: foaf:Document
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: schema:TechArticle
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: crm:E73_Information_Object
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: dcterms:references
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: has_label
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: has_description
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: identified_by
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: temporal_extent
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-
-      - literal_form: value: https://data.rijksmuseum.nl/object-metadata/api/
-
-        predicate: EXACT_SYNONYM
-
-        in_language: zh
-#         range: string
         examples:
-        - value: API Reference Documentation
+          - value: https://data.rijksmuseum.nl/object-metadata/api/
-        - value: Developer Integration Guide
+      has_label:
+        required: true
+        examples:
+          - value: Rijksmuseum Collection API
       has_description:
-#         range: string
-        examples:
-        - value: Complete REST API reference with endpoint specifications, authentication, and response formats.
-      temporal_extent:
-        range: TimeSpan
-        inlined: true
         required: false
         examples:
-        - value:
+          - value: Complete REST API reference with endpoint specifications, authentication, and response formats.
-            begin_of_the_begin: '2015-01-01'
+      temporal_extent:
+        required: false
+        examples:
+          - value:
+              begin_of_the_begin: '2015-01-01'
+              has_verbatim_value: 2015-
     comments:
     - Generic documentation class replacing domain-specific documentation slots
     - Supports multiple documentation types (API, user, developer, system)

schemas/20251121/linkml/modules/classes/Expenses.yaml

@@ -186,19 +186,19 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: |
+      - literal_form: "value: |"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: expense_type: ADMINISTRATIVE
+      - literal_form: "expense_type: ADMINISTRATIVE"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: expense_type: PROGRAM
+      - literal_form: "expense_type: PROGRAM"
 
         predicate: EXACT_SYNONYM
 

schemas/20251121/linkml/modules/classes/Manufacturer.yaml

@@ -185,7 +185,7 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: |
+      - literal_form: "value: |"
 
         predicate: EXACT_SYNONYM
 
@@ -197,37 +197,37 @@ classes:
 
         in_language: zh
 
-      - literal_form: has_label: Manufacturer name (String or Label)
+      - literal_form: "has_label: Manufacturer name (String or Label)"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_url: Manufacturer website (URL)
+      - literal_form: "has_url: Manufacturer website (URL)"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: identified_by: Unique identifier
+      - literal_form: "identified_by: Unique identifier"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Primary**: `schema:Organization` - Schema.org organization
+      - literal_form: "**Primary**: `schema:Organization` - Schema.org organization"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Close**: `org:Organization` - W3C ORG organization
+      - literal_form: "**Close**: `org:Organization` - W3C ORG organization"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Related**: `prov:Agent` - PROV-O agent responsible for production
+      - literal_form: "**Related**: `prov:Agent` - PROV-O agent responsible for production"
 
         predicate: EXACT_SYNONYM
 

schemas/20251121/linkml/modules/classes/OrganizerRole.yaml

@@ -174,13 +174,13 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: PRIMARY
+      - literal_form: "value: PRIMARY"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: CO_ORGANIZER
+      - literal_form: "value: CO_ORGANIZER"
 
         predicate: EXACT_SYNONYM
 
@@ -192,43 +192,43 @@ classes:
 
         in_language: zh
 
-      - literal_form: PRIMARY: Main organizing institution
+      - literal_form: "PRIMARY: Main organizing institution"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: CO_ORGANIZER: Partner institution with significant organizational role
+      - literal_form: "CO_ORGANIZER: Partner institution with significant organizational role"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: SPONSOR_ORGANIZER: Sponsor with curatorial/organizational input
+      - literal_form: "SPONSOR_ORGANIZER: Sponsor with curatorial/organizational input"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: LENDING_INSTITUTION: Institution lending objects with exhibition involvement
+      - literal_form: "LENDING_INSTITUTION: Institution lending objects with exhibition involvement"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: HOST_VENUE: Venue hosting a traveling exhibition
+      - literal_form: "HOST_VENUE: Venue hosting a traveling exhibition"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Primary**: `schema:Role` - Schema.org role
+      - literal_form: "**Primary**: `schema:Role` - Schema.org role"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: **Close**: `prov:Role` - PROV-O role in activity
+      - literal_form: "**Close**: `prov:Role` - PROV-O role in activity"
 
         predicate: EXACT_SYNONYM
 

schemas/20251121/linkml/modules/classes/OutdoorSite.yaml

@@ -380,163 +380,163 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: https://nde.nl/ontology/hc/aux/kroller-muller-sculpture
+      - literal_form: "value: https://nde.nl/ontology/hc/aux/kroller-muller-sculpture"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: Kroller-Muller Beeldentuin
+      - literal_form: "value: Kroller-Muller Beeldentuin"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: Paleis Het Loo Tuinen
+      - literal_form: "value: Paleis Het Loo Tuinen"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: Archeologisch Park Matilo
+      - literal_form: "value: Archeologisch Park Matilo"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: One of Europe's largest sculpture gardens with 160 works set in 25 hectares of park landscape within De Hoge Veluwe National Park.
+      - literal_form: "value: One of Europe's largest sculpture gardens with 160 works set in 25 hectares of park landscape within De Hoge Veluwe National Park."
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: range: OutdoorSiteTypeEnum
+      - literal_form: "range: OutdoorSiteTypeEnum"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: range: FeatureType
+      - literal_form: "range: FeatureType"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: SCULPTURE_GARDEN
+      - literal_form: "value: SCULPTURE_GARDEN"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: ARCHAEOLOGICAL_SITE
+      - literal_form: "value: ARCHAEOLOGICAL_SITE"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: FORMAL_GARDEN
+      - literal_form: "value: FORMAL_GARDEN"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: BotanicalInstitutionClassification
+      - literal_form: "value: BotanicalInstitutionClassification"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: ZoologicalInstitutionClassification
+      - literal_form: "value: ZoologicalInstitutionClassification"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: 160
+      - literal_form: "value: 160"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: 2500
+      - literal_form: "value: 2500"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: area_value: 25.0
+      - literal_form: "area_value: 25.0"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Included with museum ticket
+      - literal_form: "has_label: Included with museum ticket"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Paved paths
+      - literal_form: "has_label: Paved paths"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Wheelchair routes available
+      - literal_form: "has_label: Wheelchair routes available"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: area_value: 650.0
+      - literal_form: "area_value: 650.0"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Included with palace ticket
+      - literal_form: "has_label: Included with palace ticket"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value:
+      - literal_form: "value:"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: area_value: 3.5
+      - literal_form: "area_value: 3.5"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: has_label: Free
+      - literal_form: "has_label: Free"
 
         predicate: EXACT_SYNONYM
 

schemas/20251121/linkml/modules/classes/ParishArchive.yaml

@@ -200,13 +200,13 @@ classes:
 
         in_language: zh
 
-      - literal_form: value: hc:ArchiveOrganizationType
+      - literal_form: "value: hc:ArchiveOrganizationType"
 
         predicate: EXACT_SYNONYM
 
         in_language: zh
 
-      - literal_form: value: hc:HolySacredSiteType
+      - literal_form: "value: hc:HolySacredSiteType"
 
         predicate: EXACT_SYNONYM
 

schemas/20251121/linkml/modules/slots/SlotsBundle.yaml

@@ -538,6 +538,9 @@ imports:
   - ./outbound_to
   - ./overlap_with
   - ./owned_by
+  - ./paid_amount
+  - ./paid_from
+  - ./paid_to
   - ./part_of
   - ./participate_in
   - ./performed_by
@@ -628,6 +631,7 @@ imports:
   - ./threatened_by
   - ./track
   - ./transferred
+  - ./transferred_from
   - ./transferred_to
   - ./transmission
   - ./transmit_through

schemas/20251121/linkml/modules/slots/add.yaml

@@ -31,6 +31,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -96,6 +97,7 @@ slots:
       - schema:object  # schemaorg.owl:27871-27890 - "The object upon which the action is carried out." Broader: object of any action, not specifically accessioning.
     related_mappings:
       - crm:P24_transferred_title_of  # CIDOC_CRM_v7.1.3.rdf:1738-1750 - "Identifies the E18 Physical Thing involved in an E8 Acquisition." Legal transfer aspect of accessioning.
+      - la:added_member  # Linked Art extensions: member added to a Set via an Addition activity
     aliases:
       - objects_added
     examples:

schemas/20251121/linkml/modules/slots/archive/has_or_had_place_of_birth.yaml

@@ -8,6 +8,7 @@ prefixes:
   crm: http://www.cidoc-crm.org/cidoc-crm/
   rico: https://www.ica.org/standards/RiC/ontology#
   foaf: http://xmlns.com/foaf/0.1/
+  rdau: http://rdaregistry.info/Elements/u/
   dcterms: http://purl.org/dc/terms/
   prov: http://www.w3.org/ns/prov#
   skos: http://www.w3.org/2004/02/skos/core#
@@ -44,6 +45,7 @@ slots:
     close_mappings:
     - crm:P7_took_place_at
     - rico:birthPlace
+    - rdau:P60593  # RDA Registry (Unconstrained): has place of birth
     comments:
     - MIGRATED from birth_place slot (Rule 53)
     - Supports historical vs. modern place names

schemas/20251121/linkml/modules/slots/equivalent_to.yaml

@@ -24,6 +24,7 @@ prefixes:
   skos: http://www.w3.org/2004/02/skos/core#
   owl: http://www.w3.org/2002/07/owl#
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -87,6 +88,7 @@ slots:
     close_mappings:
       - owl:sameAs  # W3C OWL 2 standard - Identity assertion (stronger claim than semantic equivalence).
       - schema:sameAs  # schemaorg.owl:34129-34148 - "URL unambiguously indicating the item's identity."
+      - la:equivalent  # Linked Art extensions: equivalent instance (skos:exactMatch-like without Concept inference)
     aliases:
       - is_or_was_equivalent_to
       - wikidata_equivalent

schemas/20251121/linkml/modules/slots/has_custodian.yaml

@@ -25,6 +25,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   rico: https://www.ica.org/standards/RiC/ontology#
+  la: https://linked.art/ns/terms/
   xsd: http://www.w3.org/2001/XMLSchema#
 
 default_prefix: hc
@@ -82,6 +83,8 @@ slots:
       - crm:P49_has_former_or_current_keeper  # CIDOC_CRM_v7.1.3.rdf:2383-2408 - includes former keepers (broader temporal scope)
       - crm:P50_has_current_keeper  # CIDOC_CRM_v7.1.3.rdf:2410-2424 - "current keeper" but domain E18 Physical Thing / range E39 Actor (typed objects)
       - rico:hasOrHadHolder  # RiC-O_1-1.rdf:6436-6475 - "has or had holder" — archival holding context, domain RecordResource/Instantiation
+    related_mappings:
+      - la:current_permanent_custodian  # Linked Art extensions: normal/permanent custodian of a physical object (E19->E39)
     comments:
       - |
         MIGRATED 2026-02-03 from has_or_had_custodian for conciseness.

schemas/20251121/linkml/modules/slots/has_keyword.yaml

@@ -23,6 +23,7 @@ prefixes:
   schema: http://schema.org/
   dcat: http://www.w3.org/ns/dcat#
   dcterms: http://purl.org/dc/terms/
+  ardo: https://w3id.org/ardo/2.0/
 imports:
   - linkml:types
 default_prefix: hc
@@ -80,6 +81,8 @@ slots:
       - dcat:keyword  # dcat3.ttl:1208-1231 - "A keyword or tag describing a resource"
     close_mappings:
       - dcterms:subject  # dcterms.rdf:1968-1988 - "A topic of the resource"
+    related_mappings:
+      - ardo:has_keyword  # ArDO 2.0: links a thematic subcategory to a keyword (object property)
     comments:
       - "Used for discovery and classification."
     annotations:

schemas/20251121/linkml/modules/slots/has_member.yaml

@@ -25,6 +25,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   org: http://www.w3.org/ns/org#
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
   xsd: http://www.w3.org/2001/XMLSchema#
 default_prefix: hc
 imports:
@@ -80,5 +81,7 @@ slots:
     exact_mappings:
       - org:hasMember  # org.rdf:427-446 - "Indicates a person who is a member of the subject Organization." Domain: Organization, Range: Agent. Organization membership only; this slot also covers collection elements.
       - schema:member  # schemaorg.owl:26055-26085 - "A member of an Organization or a ProgramMembership." Domain: Organization/ProgramMembership. Does not cover collection elements.
+    related_mappings:
+      - la:has_member  # Linked Art extensions: membership (Set→Entity)
     annotations:
       custodian_types: '["*"]'

schemas/20251121/linkml/modules/slots/has_standard.yaml

@@ -19,6 +19,7 @@ prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
   dcterms: http://purl.org/dc/terms/
+  pca: http://rds.posccaesar.org/ontology/plm/rdl/
 default_prefix: hc
 imports:
 - linkml:types
@@ -82,3 +83,5 @@ slots:
       custodian_types: '["*"]'
     close_mappings:
     - dcterms:conformsTo  # dcterms.rdf:987-1010 - "An established standard to which the described resource conforms." Conformance relationship ≠ having a standard.
+    related_mappings:
+    - pca:PCA_100003538  # POSC Caesar RDL (PCA PLM core): Standard (class)

schemas/20251121/linkml/modules/slots/has_version.yaml

@@ -24,6 +24,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
   dcterms: http://purl.org/dc/terms/
+  pav: http://purl.org/pav/2.3#
 default_prefix: hc
 imports:
 - linkml:types
@@ -81,6 +82,7 @@ slots:
     multivalued: false
     related_mappings:
       - dcterms:hasVersion  # dcterms.rdf:1371-1395 — "A related resource that is a version, edition, or adaptation." Relates resources to each other, not a version identifier.
+      - pav:hasVersion  # PAV 2.3 (used by ArDO): links a resource to a version resource
     aliases:
       - has_or_had_version
       - api_ver

schemas/20251121/linkml/modules/slots/hold.yaml

@@ -27,6 +27,7 @@ prefixes:
   schema: http://schema.org/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   rico: https://www.ica.org/standards/RiC/ontology#
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -115,6 +116,7 @@ slots:
       custodian_types: '["*"]'
     related_mappings:
       - schema:owns  # schemaorg.owl:28732-28760 — "Things owned by the organization or person." Ownership ≠ custody/holding.
+      - la:current_permanent_custodian_of  # Linked Art extensions: inverse of current_permanent_custodian (Actor->Physical Object)
     close_mappings:
       - crm:P49i_is_former_or_current_keeper_of  # CIDOC_CRM:2410-2435 — "is former or current keeper of." Custody relationship.
       - rico:isOrWasHolderOf  # RiC-O_1-1.rdf:6436-6470 — "has or had holder" (inverse). Archives holding.

schemas/20251121/linkml/modules/slots/member_of.yaml

@@ -32,6 +32,7 @@ prefixes:
   rico: https://www.ica.org/standards/RiC/ontology#
   org: http://www.w3.org/ns/org#
   foaf: http://xmlns.com/foaf/0.1/
+  la: https://linked.art/ns/terms/
 default_prefix: hc
 imports:
   - linkml:types
@@ -98,6 +99,7 @@ slots:
       - rico:isOrWasMemberOf  # RiC-O_1-1.rdf:14505-14550 - Person→Group (restricted domain)
     related_mappings:
       - foaf:member  # foaf.ttl:410-417 - INVERSE: Group→Agent (not Agent→Group)
+      - la:member_of  # Linked Art extensions: membership (Entity→Set)
     annotations:
       inverse_slot: has_or_had_member
       deprecates: is_member_of

schemas/20251121/linkml/modules/slots/paid_amount.yaml

@@ -0,0 +1,41 @@
+# ==============================================================================
+# LinkML Slot Definition: paid_amount
+# ==============================================================================
+# Monetary amount paid in a payment/transfer context.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property         | Mapping | Notes                                                |
+# |----------------|------------------|---------|------------------------------------------------------|
+# | **Linked Art** | `la:paid_amount` | exact   | Payment -> Monetary Amount in Linked Art extensions. |
+# | **Schema.org** | `schema:price`   | close   | Price/value expression, broader commerce usage.      |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/paid_amount
+name: paid_amount
+title: Paid Amount
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  paid_amount:
+    slot_uri: hc:paidAmount
+    description: >-
+      Specifies the amount that was paid as part of a payment or transfer.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:paid_amount
+    close_mappings:
+      - schema:price
+    aliases:
+      - is_or_was_paid_amount
+    annotations:
+      custodian_types: '["*"]'

schemas/20251121/linkml/modules/slots/paid_from.yaml

@@ -0,0 +1,41 @@
+# ==============================================================================
+# LinkML Slot Definition: paid_from
+# ==============================================================================
+# Paying party/source in a payment context.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property       | Mapping | Notes                                                     |
+# |----------------|----------------|---------|-----------------------------------------------------------|
+# | **Linked Art** | `la:paid_from` | exact   | Payment source actor in Linked Art extensions.            |
+# | **Schema.org** | `schema:buyer` | related | Buyer role; related commercial payer perspective.         |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/paid_from
+name: paid_from
+title: Paid From
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  paid_from:
+    slot_uri: hc:paidFrom
+    description: >-
+      Identifies the party or source from which a payment originated.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:paid_from
+    related_mappings:
+      - schema:buyer
+    aliases:
+      - is_or_was_paid_from
+    annotations:
+      custodian_types: '["*"]'

schemas/20251121/linkml/modules/slots/paid_to.yaml

@@ -0,0 +1,41 @@
+# ==============================================================================
+# LinkML Slot Definition: paid_to
+# ==============================================================================
+# Receiving party/destination in a payment context.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property        | Mapping | Notes                                                     |
+# |----------------|-----------------|---------|-----------------------------------------------------------|
+# | **Linked Art** | `la:paid_to`    | exact   | Payment recipient actor in Linked Art extensions.         |
+# | **Schema.org** | `schema:seller` | related | Seller role; related commercial payee perspective.        |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/paid_to
+name: paid_to
+title: Paid To
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  paid_to:
+    slot_uri: hc:paidTo
+    description: >-
+      Identifies the party or destination to which a payment was made.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:paid_to
+    related_mappings:
+      - schema:seller
+    aliases:
+      - is_or_was_paid_to
+    annotations:
+      custodian_types: '["*"]'

schemas/20251121/linkml/modules/slots/preceded_by.yaml

@@ -35,6 +35,7 @@ prefixes:
   time: http://www.w3.org/2006/time#
   schema: http://schema.org/
   dcterms: http://purl.org/dc/terms/
+  pav: http://purl.org/pav/2.3#
 default_prefix: hc
 imports:
   - linkml:types
@@ -110,6 +111,7 @@ slots:
       - schema:predecessorOf  # schemaorg.owl:30406-30420 - "Previous variant of product; ProductModel domain"
       - schema:previousItem  # schemaorg.owl:30559-30575 - "Preceding ListItem; ListItem domain"
       - dcterms:replaces  # dcterms.rdf:1827-1846 - "Supplants/supersedes described resource; implies replacement"
+      - pav:previousVersion  # PAV 2.3 (used by ArDO): previous version link (version chain)
     aliases:
       - previous_observation
     examples:

schemas/20251121/linkml/modules/slots/remove.yaml

@@ -32,6 +32,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   crm: http://www.cidoc-crm.org/cidoc-crm/
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
 imports:
   - linkml:types
 default_prefix: hc
@@ -98,6 +99,7 @@ slots:
       - schema:object  # schemaorg.owl:27871-27890 - "The object upon which the action is carried out." Broader: object of any action, not specifically deaccessioning.
     related_mappings:
       - crm:P24_transferred_title_of  # CIDOC_CRM_v7.1.3.rdf:1738-1750 - "Identifies the E18 Physical Thing involved in an E8 Acquisition." Legal transfer aspect of deaccessioning/disposal.
+      - la:removed_member  # Linked Art extensions: member removed from a Set via a Removal activity
     aliases:
       - objects_removed
     examples:

schemas/20251121/linkml/modules/slots/transferred.yaml

@@ -22,6 +22,7 @@ prefixes:
   linkml: https://w3id.org/linkml/
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
+  la: https://linked.art/ns/terms/
   skos: http://www.w3.org/2004/02/skos/core#
   xsd: http://www.w3.org/2001/XMLSchema#
 
@@ -83,5 +84,6 @@ slots:
       - is_or_was_transferred
     related_mappings:
       - schema:TransferAction  # schemaorg.owl:5808-5812 - "act of transferring animate or inanimate objects"
+      - la:transferred  # Linked Art extensions: what was transferred (Transfer->Entity). Note: this slot is boolean, so mapping is conceptual only.
     annotations:
       custodian_types: '["*"]'

schemas/20251121/linkml/modules/slots/transferred_from.yaml

@@ -0,0 +1,45 @@
+# ==============================================================================
+# LinkML Slot Definition: transferred_from
+# ==============================================================================
+# Source party/place from which something was transferred.
+#
+# ONTOLOGY ALIGNMENT (verified against linked.art terms):
+#
+# | Ontology       | Property              | Mapping | Notes                                                       |
+# |----------------|-----------------------|---------|-------------------------------------------------------------|
+# | **Linked Art** | `la:transferred_from` | exact   | Source entity in a transfer in Linked Art extensions.       |
+# | **CIDOC-CRM**  | `crm:P27_moved_from`  | narrow  | Location-only origin (place), narrower than general source. |
+# | **Schema.org** | `schema:fromLocation` | narrow  | Location-only source in action logistics.                   |
+#
+# CREATED: 2026-02-18
+# ==============================================================================
+
+id: https://nde.nl/ontology/hc/slot/transferred_from
+name: transferred_from
+title: Transferred From
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  la: https://linked.art/ns/terms/
+  crm: http://www.cidoc-crm.org/cidoc-crm/
+  schema: http://schema.org/
+imports:
+  - linkml:types
+default_prefix: hc
+slots:
+  transferred_from:
+    slot_uri: hc:transferredFrom
+    description: >-
+      Identifies the source party, owner, custodian, or location from which
+      something was transferred.
+    range: string
+    multivalued: false
+    exact_mappings:
+      - la:transferred_from
+    narrow_mappings:
+      - crm:P27_moved_from
+      - schema:fromLocation
+    aliases:
+      - is_or_was_transferred_from
+    annotations:
+      custodian_types: '["*"]'

schemas/20251121/linkml/modules/slots/transferred_to.yaml

@@ -24,6 +24,7 @@ prefixes:
   hc: https://nde.nl/ontology/hc/
   schema: http://schema.org/
   odrl: http://www.w3.org/ns/odrl/2/
+  la: https://linked.art/ns/terms/
   skos: http://www.w3.org/2004/02/skos/core#
   xsd: http://www.w3.org/2001/XMLSchema#
 
@@ -86,5 +87,6 @@ slots:
       - is_or_was_transferred_to
     related_mappings:
       - schema:TransferAction  # schemaorg.owl:5808-5812 - "act of transferring animate or inanimate objects"
+      - la:transferred_to  # Linked Art extensions: transferred to (Transfer→Entity)
     annotations:
       custodian_types: '["*"]'

scripts/verify_external_mappings.py

@@ -0,0 +1,282 @@
+#!/usr/bin/env python3
+"""Verify external ontology mappings used in LinkML YAML files.
+
+Default behavior targets changed/untracked YAML files under:
+  schemas/20251121/linkml/
+
+It validates mapping CURIEs under mapping keys:
+  exact_mappings, close_mappings, broad_mappings, narrow_mappings, related_mappings
+
+Supported prefixes:
+  - la   (Linked Art)
+  - rdac (RDA classes)
+  - rdau (RDA unconstrained properties)
+  - pav  (PAV 2.3)
+  - ardo (ArDO)
+  - pca  (POSC Caesar RDS)
+"""
+
+from __future__ import annotations
+
+import argparse
+import json
+import re
+import subprocess
+import sys
+import urllib.error
+import urllib.request
+import xml.etree.ElementTree as ET
+from pathlib import Path
+
+
+MAPPING_KEYS = {
+    "exact_mappings",
+    "close_mappings",
+    "broad_mappings",
+    "narrow_mappings",
+    "related_mappings",
+}
+SUPPORTED_PREFIXES = {"la", "rdac", "rdau", "pav", "ardo", "pca"}
+CURIE_RE = re.compile(r"^(?P<prefix>[a-z][a-z0-9_-]*):(?P<local>[A-Za-z0-9_./-]+)$")
+
+
+def fetch_text(url: str, timeout: int = 60) -> str:
+    with urllib.request.urlopen(url, timeout=timeout) as resp:
+        return resp.read().decode("utf-8", errors="ignore")
+
+
+def fetch_bytes(url: str, timeout: int = 60) -> bytes:
+    with urllib.request.urlopen(url, timeout=timeout) as resp:
+        return resp.read()
+
+
+def parse_mapping_curies(file_path: Path) -> list[tuple[int, str, str]]:
+    """Return (line_number, prefix, local) mapping CURIEs from mapping blocks."""
+    out: list[tuple[int, str, str]] = []
+    lines = file_path.read_text(encoding="utf-8", errors="ignore").splitlines()
+
+    in_block = False
+    block_indent = -1
+
+    for idx, line in enumerate(lines, start=1):
+        stripped = line.strip()
+        indent = len(line) - len(line.lstrip(" "))
+
+        if not in_block:
+            if not stripped or stripped.startswith("#"):
+                continue
+            if ":" in stripped:
+                key = stripped.split(":", 1)[0].strip()
+                if key in MAPPING_KEYS and stripped.endswith(":"):
+                    in_block = True
+                    block_indent = indent
+            continue
+
+        # Exit mapping block on dedent to same or lower level and non-list content
+        if stripped and not stripped.startswith("#"):
+            if indent <= block_indent and not stripped.startswith("-"):
+                in_block = False
+                block_indent = -1
+                # re-process this line as potential new key
+                if ":" in stripped:
+                    key = stripped.split(":", 1)[0].strip()
+                    if key in MAPPING_KEYS and stripped.endswith(":"):
+                        in_block = True
+                        block_indent = indent
+                continue
+
+        if stripped.startswith("-"):
+            item = stripped[1:].strip()
+            # remove inline comment
+            if " #" in item:
+                item = item.split(" #", 1)[0].strip()
+            m = CURIE_RE.match(item)
+            if m:
+                pfx = m.group("prefix")
+                local = m.group("local")
+                out.append((idx, pfx, local))
+
+    return out
+
+
+def changed_yaml_files(repo_root: Path, scope: Path) -> list[Path]:
+    """Collect changed and untracked YAML files inside scope."""
+    files: set[Path] = set()
+
+    def run(cmd: list[str]) -> list[str]:
+        try:
+            out = subprocess.check_output(cmd, cwd=repo_root)
+            return [x for x in out.decode().splitlines() if x]
+        except subprocess.CalledProcessError:
+            return []
+
+    tracked = run(["git", "diff", "--name-only"])
+    untracked = run(["git", "ls-files", "--others", "--exclude-standard"])
+
+    for rel in tracked + untracked:
+        if not rel.endswith(".yaml"):
+            continue
+        p = (repo_root / rel).resolve()
+        try:
+            p.relative_to(scope.resolve())
+        except ValueError:
+            continue
+        if p.is_file():
+            files.add(p)
+
+    return sorted(files)
+
+
+def load_linked_art_terms() -> tuple[set[str], set[str]]:
+    xml_data = fetch_bytes("https://linked.art/ns/terms/")
+    root = ET.fromstring(xml_data)
+    ns = {
+        "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
+        "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
+    }
+    props: set[str] = set()
+    classes: set[str] = set()
+
+    for p in root.findall("rdf:Property", ns):
+        uri = p.attrib.get("{http://www.w3.org/1999/02/22-rdf-syntax-ns#}about", "")
+        if uri.startswith("https://linked.art/ns/terms/"):
+            props.add(uri.rsplit("/", 1)[-1])
+    for c in root.findall("rdfs:Class", ns):
+        uri = c.attrib.get("{http://www.w3.org/1999/02/22-rdf-syntax-ns#}about", "")
+        if uri.startswith("https://linked.art/ns/terms/"):
+            classes.add(uri.rsplit("/", 1)[-1])
+
+    return props, classes
+
+
+def load_rda_ids(path: str, marker: str) -> set[str]:
+    txt = fetch_text(f"https://www.rdaregistry.info/jsonld/Elements/{path}.jsonld")
+    return set(re.findall(marker, txt))
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description="Verify LinkML external mappings")
+    parser.add_argument(
+        "files",
+        nargs="*",
+        help="YAML files to verify (defaults to changed/untracked files under scope)",
+    )
+    parser.add_argument(
+        "--scope",
+        default="schemas/20251121/linkml",
+        help="Default scope used when no files are provided",
+    )
+    parser.add_argument(
+        "--all",
+        action="store_true",
+        help="Scan all YAML files under --scope (instead of changed/untracked files)",
+    )
+    args = parser.parse_args()
+
+    repo_root = Path(__file__).resolve().parents[1]
+    scope = (repo_root / args.scope).resolve()
+
+    if args.files:
+        files = [Path(f).resolve() for f in args.files]
+    elif args.all:
+        files = sorted(scope.rglob("*.yaml"))
+    else:
+        files = changed_yaml_files(repo_root, scope)
+
+    if not files:
+        print("No target YAML files found. Nothing to verify.")
+        return 0
+
+    occurrences: dict[str, list[tuple[Path, int, str]]] = {}
+    for file_path in files:
+        if not file_path.exists() or file_path.suffix != ".yaml":
+            continue
+        for line_no, pfx, local in parse_mapping_curies(file_path):
+            if pfx not in SUPPORTED_PREFIXES:
+                continue
+            occurrences.setdefault(pfx, []).append((file_path, line_no, local))
+
+    if not occurrences:
+        print("No supported external mapping CURIEs found in selected files.")
+        return 0
+
+    failures: list[str] = []
+
+    la_props: set[str] = set()
+    la_classes: set[str] = set()
+    rdac_ids: set[str] = set()
+    rdau_ids: set[str] = set()
+    pav_text = ""
+
+    try:
+        la_props, la_classes = load_linked_art_terms()
+    except Exception as e:  # pragma: no cover - network failures
+        failures.append(f"[load] Linked Art: {e}")
+
+    try:
+        rdac_ids = load_rda_ids("c", r"Elements/c/(C\d+)")
+    except Exception as e:  # pragma: no cover
+        failures.append(f"[load] RDA c.jsonld: {e}")
+
+    try:
+        rdau_ids = load_rda_ids("u", r"Elements/u/(P\d+)")
+    except Exception as e:  # pragma: no cover
+        failures.append(f"[load] RDA u.jsonld: {e}")
+
+    try:
+        pav_text = fetch_text("https://purl.org/pav/2.3")
+    except Exception as e:  # pragma: no cover
+        failures.append(f"[load] PAV 2.3: {e}")
+
+    print("Verifying mapping CURIEs:")
+    for prefix in sorted(occurrences):
+        locals_unique = sorted({x[2] for x in occurrences[prefix]})
+        print(f"- {prefix}: {', '.join(locals_unique)}")
+
+    # prefix-specific verification
+    for file_path, line_no, local in occurrences.get("la", []):
+        if local not in la_props and local not in la_classes:
+            failures.append(f"{file_path}:{line_no} la:{local} not found in linked.art/ns/terms")
+
+    for file_path, line_no, local in occurrences.get("rdac", []):
+        if local not in rdac_ids:
+            failures.append(f"{file_path}:{line_no} rdac:{local} not found in RDA Elements/c.jsonld")
+
+    for file_path, line_no, local in occurrences.get("rdau", []):
+        if local not in rdau_ids:
+            failures.append(f"{file_path}:{line_no} rdau:{local} not found in RDA Elements/u.jsonld")
+
+    for file_path, line_no, local in occurrences.get("pav", []):
+        if local not in pav_text:
+            failures.append(f"{file_path}:{line_no} pav:{local} not found in PAV 2.3 ontology")
+
+    for file_path, line_no, local in occurrences.get("ardo", []):
+        url = f"https://w3id.org/ardo/2.0/{local}"
+        try:
+            txt = fetch_text(url)
+            if local not in txt:
+                failures.append(f"{file_path}:{line_no} ardo:{local} not found at {url}")
+        except urllib.error.URLError as e:
+            failures.append(f"{file_path}:{line_no} ardo:{local} fetch error: {e}")
+
+    for file_path, line_no, local in occurrences.get("pca", []):
+        url = f"https://rds.posccaesar.org/ontology/plm/rdl/{local}"
+        try:
+            txt = fetch_text(url)
+            if local not in txt:
+                failures.append(f"{file_path}:{line_no} pca:{local} not found at {url}")
+        except urllib.error.URLError as e:
+            failures.append(f"{file_path}:{line_no} pca:{local} fetch error: {e}")
+
+    if failures:
+        print("\nFAIL")
+        for f in failures:
+            print(f"- {f}")
+        return 1
+
+    print("\nOK: all checked mapping CURIEs were verified against source ontologies.")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())