id: https://nde.nl/ontology/hc/class/Acquisition name: acquisition_class title: Acquisition Class prefixes: linkml: https://w3id.org/linkml/ hc: https://nde.nl/ontology/hc/ crm: http://www.cidoc-crm.org/cidoc-crm/ prov: http://www.w3.org/ns/prov# schema: http://schema.org/ dwc: http://rs.tdwg.org/dwc/terms/ rico: https://www.ica.org/standards/RiC/ontology# dcterms: http://purl.org/dc/terms/ skos: http://www.w3.org/2004/02/skos/core# rdfs: http://www.w3.org/2000/01/rdf-schema# org: http://www.w3.org/ns/org# xsd: http://www.w3.org/2001/XMLSchema# imports: - linkml:types - ../slots/temporal_extent - ./TimeSpan - ../slots/specificity_annotation - ../slots/has_or_had_score - ./SpecificityAnnotation - ./TemplateSpecificityScore - ./TemplateSpecificityType - ./TemplateSpecificityTypes default_range: string enums: AcquisitionMethodEnum: description: Methods by which items are acquired for collections. permissible_values: FIELD_COLLECTION: description: Collected in the field (biological, geological specimens) meaning: dwc:Occurrence PURCHASE: description: Acquired through purchase meaning: schema:BuyAction DONATION: description: Given as a gift or donation meaning: schema:DonateAction BEQUEST: description: Received through will or estate TRANSFER: description: Transferred from another institution meaning: crm:E10_Transfer_of_Custody EXCHANGE: description: Exchanged with another institution (specimen exchange) EXCAVATION: description: Recovered through archaeological excavation LOAN: description: On long-term loan (not owned) CONFISCATION: description: Seized or confiscated (legal action) FOUND: description: Found object (no prior owner) COMMISSION: description: Commissioned work (created for the collection) UNKNOWN: description: Acquisition method unknown classes: Acquisition: class_uri: crm:E8_Acquisition description: 'Represents an acquisition event - how and when an object or specimen was obtained for a collection. CIDOC-CRM E8 Acquisition models the transfer of legal ownership rights. **Key properties**: - `temporal_extent`: When the acquisition occurred (TimeSpan with fuzzy boundaries for historical items) - `acquisition_method`: How the item was acquired (field collection, purchase, donation, etc.) - `acquisition_source`: From whom/where acquired (collector, dealer, previous owner, field location) - `acquisition_agent`: Who performed the acquisition (collector, curator, institution) **Darwin Core alignment**: For biological specimens: - `temporal_extent` replaces `dwc:eventDate` (collection date) - `acquisition_source` can capture `dwc:locality` and `dwc:recordedBy` **Use cases**: - Museum object provenance (purchase from dealer, 1923) - Biological specimen collection (field collection, Amazon basin, 1750s) - Archival transfer (transferred from ministry archives, 2001) - Art donation (donated by artist''s estate, 2015)' exact_mappings: - crm:E8_Acquisition close_mappings: - prov:Activity - schema:AcquireAction related_mappings: - rico:Event - dwc:Event slots: - temporal_extent - specificity_annotation - has_or_had_score attributes: acquisition_method: range: AcquisitionMethodEnum description: Method by which the item was acquired (field collection, purchase, donation, etc.). acquisition_source: range: string description: 'Source from which item was acquired. Can be: - Person name (collector, donor, seller) - Institution name (transferring institution) - Location (field collection locality) - Dealer or auction house' acquisition_agent: range: string description: Agent who performed the acquisition (collector name, curator, institution). For biological specimens, maps to dwc:recordedBy. acquisition_location: range: string description: Location where acquisition occurred (field collection site, auction house location). For biological specimens, can capture field locality. acquisition_reference: range: string description: Reference number or identifier for the acquisition (accession number, lot number). acquisition_notes: range: string description: Additional notes about the acquisition event. acquisition_date_text: range: string description: Original date text as recorded (e.g., "1750s", "pre-1662", "circa 1900"). For backward compatibility with string-based collection_date. The structured date should be in temporal_extent. comments: - Created per slot_fixes.yaml revision for collection_date migration - Replaces simple collection_date string with structured acquisition event - "RULE 53: Part of collection_date \u2192 was_acquired_through + Acquisition migration" annotations: specificity_score: 0.7 specificity_rationale: Fairly specific - applies to items with acquisition provenance custodian_types: - '*' custodian_types_rationale: Universal utility concept examples: - value: "# Biological specimen collected in the field\nacquisition_method: FIELD_COLLECTION\ntemporal_extent:\n begin_of_the_begin: \"1750-01-01\"\n end_of_the_end: \"1759-12-31\"\n notes: \"Collected sometime in the 1750s\"\nacquisition_source: \"Amazon basin, Brazil\"\nacquisition_agent: \"Unknown Dutch collector\"\nacquisition_date_text: \"1750s\"\n" - value: "# Museum object purchased from dealer\nacquisition_method: PURCHASE\ntemporal_extent:\n begin_of_the_begin: \"1923-03-15\"\n end_of_the_end: \"1923-03-15\"\nacquisition_source: \"Sotheby's London\"\nacquisition_reference: \"Lot 245, Sale of March 1923\"\n" - value: "# Historical specimen with uncertain date\nacquisition_method: FIELD_COLLECTION\ntemporal_extent:\n begin_of_the_begin: \"1600-01-01\"\n end_of_the_end: \"1662-12-31\"\n notes: \"Pre-1662 (before Great Fire of London)\"\nacquisition_date_text: \"pre-1662\"\n"