kempersc/glam
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
glam/SESSION_SUMMARY_20251122_APPELLATION_IDENTIFIER_REFACTORING.md

15 KiB
Raw Blame History

Session Summary - Appellation/Identifier Refactoring (2025-11-22)

Session Overview

Duration: ~1 hour
Date: November 22, 2025
Goal: Connect orphaned Appellation and Identifier classes to the Custodian hub using CIDOC-CRM edge properties

Status: ✅ COMPLETE

All objectives achieved. Schema validates successfully. Ready for RDF regeneration.

What We Accomplished

1. Class Renaming ✅

Problem: Appellation and Identifier classes were disconnected from the Custodian hub - no relationship properties defined.

Solution: Renamed classes to make relationship clear and added bidirectional CIDOC-CRM properties:

Old Name New Name CIDOC-CRM Class Purpose
Appellation CustodianAppellation crm:E41_Appellation Textual identifiers (names, labels)
Identifier CustodianIdentifier crm:E42_Identifier Formal reference codes (ISIL, Wikidata)

2. Bidirectional Linking ✅

Implemented proper graph edges using CIDOC-CRM properties:

For CustodianAppellation (Names)

Forward Property (Custodian → CustodianAppellation):

Custodian:
  slots:
    appellations:
      slot_uri: crm:P1_is_identified_by
      range: CustodianAppellation
      multivalued: true

Inverse Property (CustodianAppellation → Custodian):

CustodianAppellation:
  slots:
    identifies_custodian:
      slot_uri: crm:P1i_identifies
      range: Custodian
      required: false

For CustodianIdentifier (Formal IDs)

Forward Property (Custodian → CustodianIdentifier):

Custodian:
  slots:
    identifiers:
      slot_uri: crm:P48_has_preferred_identifier
      range: CustodianIdentifier
      multivalued: true

Inverse Property (CustodianIdentifier → Custodian):

CustodianIdentifier:
  slots:
    identifies_custodian:
      slot_uri: crm:P48i_is_preferred_identifier_of
      range: Custodian
      required: false

3. Files Modified ✅

9 files total:

Classes (5 files updated):

  1. ✅ modules/classes/Appellation.yaml

    • Renamed class ID: Identifier → CustodianAppellation
    • Updated class_uri: crm:E41_Appellation
    • Added identifies_custodian slot with documentation
    • Added CIDOC-CRM property descriptions

  2. ✅ modules/classes/Identifier.yaml

    • Renamed class ID: Identifier → CustodianIdentifier
    • Updated class_uri: crm:E42_Identifier
    • Added identifies_custodian slot with documentation
    • Added CIDOC-CRM property descriptions

  3. ✅ modules/classes/Custodian.yaml

    • Added appellations slot (forward property)
    • Added identifiers slot (forward property)
    • Both use proper CIDOC-CRM slot_uri mappings
    • Both multivalued and inlined_as_list

  4. ✅ modules/classes/CustodianObservation.yaml

    • Updated observed_name range: Appellation → CustodianAppellation
    • Updated alternative_observed_names range: Appellation → CustodianAppellation

  5. ✅ modules/classes/CustodianReconstruction.yaml

    • Updated identifiers range: Identifier → CustodianIdentifier
    • Updated identifiers slot_uri: dcterms:identifier → crm:P48_has_preferred_identifier
    • Updated documentation to reflect CIDOC-CRM alignment

Slots (3 files - 1 updated, 2 created):

  1. ✅ modules/slots/identifiers.yaml (UPDATED)

    • Changed slot_uri: dcterms:identifier → crm:P48_has_preferred_identifier
    • Changed range: Identifier → CustodianIdentifier
    • Added CIDOC-CRM documentation
    • Added inlined_as_list: true

  2. ✅ modules/slots/appellations.yaml (NEW)

    • Created forward property for Custodian → CustodianAppellation
    • slot_uri: crm:P1_is_identified_by
    • range: CustodianAppellation
    • multivalued: true, inlined_as_list: true

  3. ✅ modules/slots/identifies_custodian.yaml (NEW)

    • Created inverse property for CustodianAppellation/CustodianIdentifier → Custodian
    • Specific slot_uri defined in class slot_usage (crm:P1i_identifies or crm:P48i_is_preferred_identifier_of)
    • range: Custodian
    • required: false

Main Schema (1 file updated):

  1. ✅ 01_custodian_name_modular.yaml
    • Added imports: modules/slots/appellations, modules/slots/identifies_custodian
    • Updated file count: 84 → 86 (+2 new slots)
    • Updated comments to document new bidirectional linking slots

4. Schema Validation ✅

Compiled successfully with gen-owl:

$ cd /Users/kempersc/apps/glam
$ gen-owl -f ttl schemas/20251121/linkml/01_custodian_name_modular.yaml
# Output: Valid RDF/Turtle with expected namespace warnings

Warnings (expected and acceptable):

  • Namespace mapping conflicts (heritage, schema, tooi) - resolved by import order
  • Multiple owl types for language slot - acceptable for multilingual support

RDF Output: Schema compiles to valid OWL ontology with all CIDOC-CRM properties intact.

Technical Details

Hub Architecture Pattern

The Custodian hub now properly connects to its appellations and identifiers:

┌─────────────────────┐
│   Custodian Hub     │  (Minimal - just hc_id + metadata)
│   crm:E39_Actor     │
└──────────┬──────────┘
           │
           ├─── crm:P1_is_identified_by ───────→ CustodianAppellation (E41)
           │                                            │
           │                                            └─ crm:P1i_identifies ─→ [back to hub]
           │
           └─── crm:P48_has_preferred_identifier ─→ CustodianIdentifier (E42)
                                                          │
                                                          └─ crm:P48i_is_preferred_identifier_of ─→ [back to hub]

CIDOC-CRM Properties Used

P1_is_identified_by / P1i_identifies (Appellation)

CIDOC-CRM Definition:

"This property describes the naming or identification of any real-world item by a name or any other identifier."

  • Domain: E1_CRM_Entity (superclass of E39_Actor/Custodian)
  • Range: E41_Appellation
  • Inverse: P1i_identifies (E41_Appellation → E1_CRM_Entity)

Use: Official names, vernacular names, historical names, multilingual translations

P48_has_preferred_identifier / P48i_is_preferred_identifier_of (Identifier)

CIDOC-CRM Definition:

"This property records the preferred E42 Identifier that was used to identify an instance of E1 CRM Entity."

  • Domain: E1_CRM_Entity (superclass of E39_Actor/Custodian)
  • Range: E42_Identifier
  • Inverse: P48i_is_preferred_identifier_of (E42_Identifier → E1_CRM_Entity)

Use: ISIL codes, Wikidata Q-numbers, VIAF IDs, KvK numbers, ROR IDs

Schema Statistics

Before Refactoring:

  • Classes: 17
  • Enums: 6
  • Slots: 59
  • Total files: 84

After Refactoring:

  • Classes: 17 (no change - renamed existing)
  • Enums: 6 (no change)
  • Slots: 61 (+2: appellations, identifies_custodian)
  • Total files: 86 (+2)

Example Instance

# Rijksmuseum example showing bidirectional linking

Custodian:
  hc_id: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
  
  appellations:
    - appellation_value: "Rijksmuseum"
      appellation_language: "nl"
      appellation_type: OFFICIAL
      identifies_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
    
    - appellation_value: "The Rijksmuseum"
      appellation_language: "en"
      appellation_type: TRANSLATION
      identifies_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
  
  identifiers:
    - identifier_scheme: "ISIL"
      identifier_value: "NL-AmRMA"
      identifies_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804
    
    - identifier_scheme: "Wikidata"
      identifier_value: "Q190804"
      identifies_custodian: https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804

Documentation Created

Primary Documentation (3 files):

  1. ✅ APPELLATION_IDENTIFIER_REFACTORING_20251122.md

    • Complete technical specification
    • File-by-file change log
    • CIDOC-CRM property documentation
    • Validation results
    • Next steps

  2. ✅ QUICK_STATUS_APPELLATION_IDENTIFIER_COMPLETE.md

    • One-page summary
    • Quick reference for status
    • High-level architecture overview

  3. ✅ HUB_ARCHITECTURE_DIAGRAM.md

    • Mermaid diagram showing bidirectional relationships
    • LinkML schema snippets
    • RDF/Turtle serialization example
    • SPARQL query examples
    • Design principles and benefits

Session Log (1 file):

  1. ✅ SESSION_SUMMARY_20251122_APPELLATION_IDENTIFIER_REFACTORING.md (this file)
    • Complete session narrative
    • What we accomplished
    • Technical details
    • Files modified
    • Next steps

Next Steps

Immediate (Required):

  1. ⏳ Regenerate RDF Formats

    cd /Users/kempersc/apps/glam/schemas/20251121/rdf

# Generate Turtle
gen-owl -f ttl ../linkml/01_custodian_name_modular.yaml > 01_custodian_name.owl.ttl

# Generate all 7 other formats
rdfpipe 01_custodian_name.owl.ttl -o nt > 01_custodian_name.nt
rdfpipe 01_custodian_name.owl.ttl -o jsonld > 01_custodian_name.jsonld
rdfpipe 01_custodian_name.owl.ttl -o xml > 01_custodian_name.rdf
rdfpipe 01_custodian_name.owl.ttl -o n3 > 01_custodian_name.n3
rdfpipe 01_custodian_name.owl.ttl -o trig > 01_custodian_name.trig
rdfpipe 01_custodian_name.owl.ttl -o trix > 01_custodian_name.trix

# Count triples
rapper -i turtle -c 01_custodian_name.owl.ttl

  2. ⏳ Update UML Diagrams

    • Regenerate Mermaid class diagram with new appellations/identifiers slots
    • Regenerate PlantUML diagram showing bidirectional edge properties
    • Add color coding for forward vs. inverse properties

  3. ⏳ Create Example Instances

    • Create /schemas/20251121/examples/rijksmuseum_with_appellations_identifiers.yaml
    • Demonstrate bidirectional linking in practice
    • Show multiple appellations (multilingual)
    • Show multiple identifiers (ISIL, Wikidata, VIAF)

Optional (Enhancement):

  1. ⏳ Update Architecture Documentation

    • docs/SCHEMA_ARCHITECTURE.md - Add bidirectional linking section
    • docs/ONTOLOGY_ALIGNMENT.md - Document CIDOC-CRM property usage
    • docs/USAGE_GUIDE.md - Add examples for querying by name/identifier

  2. ⏳ Create SPARQL Query Examples

    • Find custodian by ISIL code
    • Find all appellations for a custodian
    • Find custodian by vernacular name
    • Find all identifiers in Wikidata scheme

  3. ⏳ Performance Testing

    • Test bidirectional queries on large datasets
    • Optimize SPARQL queries for graph traversal
    • Benchmark RDF serialization performance

Context: Legal Entity Refactoring Project

This appellation/identifier refactoring is the fourth and final step of the Legal Entity Refactoring project (2025-11-22):

Completed Steps:

  1. ✅ Legal Entity Model (Step 1)

    • Created 8 new classes for legal entity modeling
    • Implemented ISO 20275 legal forms
    • Added TOOI-inspired legal name structure
    • Added registration info and governance structure

  2. ✅ RDF Generation (Step 2)

    • Generated 7 RDF serialization formats
    • Validated 2,701 triples
    • Created RDF generation workflow documentation

  3. ✅ UML Diagrams (Step 3)

    • Created Mermaid class diagram (GitHub-renderable)
    • Created PlantUML class diagram (color-coded packages)
    • Documented Hub-Observation-Reconstruction pattern

  4. ✅ Appellation/Identifier Refactoring (Step 4 - THIS SESSION)

    • Connected orphaned classes to Custodian hub
    • Implemented bidirectional CIDOC-CRM properties
    • Validated schema compilation

Project Documentation:

Main Docs:

  • LEGAL_ENTITY_REFACTORING.md - Complete legal entity model spec
  • LEGAL_ENTITY_QUICK_REFERENCE.md - Quick ref guide
  • RDF_UML_GENERATION_COMPLETE_20251122.md - RDF generation workflow

Session Logs:

  • SESSION_SUMMARY_20251122_LEGAL_ENTITY_REFACTORING.md - Legal entity session
  • SESSION_SUMMARY_20251122_RDF_UML_GENERATION.md - RDF/UML session
  • SESSION_SUMMARY_20251122_APPELLATION_IDENTIFIER_REFACTORING.md - This session

Quick Status:

  • QUICK_STATUS_LEGAL_ENTITY_20251122.md - Legal entity status
  • QUICK_STATUS_APPELLATION_IDENTIFIER_COMPLETE.md - This refactoring status

Key Achievements

✅ CIDOC-CRM Compliance: Proper use of cultural heritage ontology properties
✅ Bidirectional Navigation: Can query in both directions efficiently
✅ Type Safety: Strongly typed relationships with proper ranges
✅ Hub Pattern Completion: Custodian hub now fully connected to its names and IDs
✅ Validation Success: Schema compiles without errors
✅ Documentation Complete: 4 comprehensive docs created

Schema Files Location

Main Schema: /Users/kempersc/apps/glam/schemas/20251121/linkml/01_custodian_name_modular.yaml

Modified Classes:

  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/classes/Appellation.yaml
  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/classes/Identifier.yaml
  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/classes/Custodian.yaml
  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/classes/CustodianObservation.yaml
  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/classes/CustodianReconstruction.yaml

Modified/Created Slots:

  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/slots/identifiers.yaml (updated)
  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/slots/appellations.yaml (created)
  • /Users/kempersc/apps/glam/schemas/20251121/linkml/modules/slots/identifies_custodian.yaml (created)

References

CIDOC-CRM Documentation:

Local Ontology Files:

  • /Users/kempersc/apps/glam/data/ontology/CIDOC_CRM_v7.1.3.rdf
  • /Users/kempersc/apps/glam/data/ontology/tooiont.ttl
  • /Users/kempersc/apps/glam/data/ontology/core-public-organisation-ap.ttl

Project Documentation:

  • AGENTS.md - AI agent instructions
  • SCHEMA_MODULES.md - Schema architecture
  • ONTOLOGY_EXTENSIONS.md - Ontology integration patterns

Conclusion

✅ All objectives achieved
✅ Schema validates successfully
✅ Documentation complete
✅ Ready for next phase (RDF regeneration, UML updates)

The Custodian hub architecture is now complete with proper bidirectional linking to appellations and identifiers using CIDOC-CRM standards.

Session End Time: 2025-11-22
Total Files Modified: 9
Total Files Created: 6 (3 slot files + 3 documentation files)
Status: ✅ SUCCESS