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Session Summary: Legal Entity Model Implementation

Date: 2025-11-22
Duration: ~2 hours
Status: ✅ COMPLETE

What We Accomplished

1. Fixed Schema Import Issues ✅

  • Removed deprecated entity_type import from main schema
  • Cleaned up references to old entity_type.yaml and registration_number.yaml
  • Files properly renamed with .deprecated extension

2. Generated Complete RDF Ontology ✅

Successfully generated OWL ontology in 4 formats:

Format Size Status
Turtle 138 KB ✅ Generated
N-Triples 403 KB ✅ Generated
RDF/XML 289 KB ✅ Generated
JSON-LD 335 KB ✅ Generated

Location: schemas/20251121/rdf/

Ontology Features:

  • 17 classes with OWL restrictions
  • 59 properties with domain/range constraints
  • 6 enumerations
  • Complete ontology alignments (12 base ontologies)
  • SKOS documentation

3. Parsed ISO 20275 Legal Form Codes ✅

Statistics:

  • 3,819 active legal form codes parsed
  • 117 jurisdictions (countries/regions)
  • Top 5 countries: US (724), FR (255), CA (239), FI (132), BE (129)

Generated:

  • ISO20275_common.yaml - Template for heritage institution mappings

4. Created Comprehensive Documentation ✅

New Documentation (21 KB total):

  1. LEGAL_ENTITY_REFACTORING.md (14 KB) - Complete design rationale
  2. LEGAL_ENTITY_QUICK_REFERENCE.md (3 KB) - Developer quick reference
  3. LEGAL_ENTITY_IMPLEMENTATION_SUMMARY.md (4 KB) - This session's accomplishments

Key Files Modified

Fixed:

  • 01_custodian_name_modular.yaml - Removed deprecated import

Generated:

  • schemas/20251121/rdf/01_custodian_name.owl.ttl (Turtle)
  • schemas/20251121/rdf/01_custodian_name.nt (N-Triples)
  • schemas/20251121/rdf/01_custodian_name.rdf (RDF/XML)
  • schemas/20251121/rdf/01_custodian_name.jsonld (JSON-LD)
  • schemas/20251121/linkml/modules/mappings/ISO20275_common.yaml

Documented:

  • LEGAL_ENTITY_IMPLEMENTATION_SUMMARY.md (complete summary)

What's Left To Do

PRIORITY 1: Update Example Instances

All example files in schemas/20251121/examples/ still use old format:

  • Use deprecated entity_type (should be legal_entity_type)
  • Use primitive strings for legal metadata (should be class instances)

Migration needed:

# OLD (current examples)
entity_type: FOUNDATION
legal_name: "Stichting Rijksmuseum"
legal_form: "Stichting"
registration_number: "12345678"

# NEW (required format)
legal_entity_type:
  entity_category: ORGANIZATION
legal_name:
  full_name: "Stichting Rijksmuseum"
  name_without_type: "Rijksmuseum"
legal_form:
  elf_code: "8888"
  local_name: "Stichting"
  country_code: "NL"
registration_numbers:
  - number: "12345678"
    authority:
      name: "Kamer van Koophandel"
      country: "NL"

PRIORITY 2: Run Validation Tests

Once examples are updated:

linkml-validate -s schemas/20251121/linkml/01_custodian_name_modular.yaml \
                schemas/20251121/examples/*.yaml

PRIORITY 3: Generate Python Dataclasses

gen-python schemas/20251121/linkml/01_custodian_name_modular.yaml > \
           schemas/20251121/python/custodian_model.py

Future Work

  1. Curate ISO 20275 Country Mappings

    • Netherlands: Stichting, Vereniging, BV
    • Belgium: ASBL/VZW, SA/NV
    • France: Association loi 1901, Fondation
    • Germany: e.V., gGmbH, Stiftung
    • US: 501(c)(3), LLC, Corporation

  2. Create Data Migration Script

    • Automate conversion from old to new format
    • Handle edge cases (missing data, invalid enum values)
    • Preserve provenance metadata

  3. National Registry Integration

    • KvK (NL), KBO/BCE (BE), INSEE SIRENE (FR)
    • API connectors for validation
    • Automated enrichment

Validation Status

Component Status Notes
Schema imports ✅ Pass All 84 modules load successfully
RDF generation ✅ Pass 4 formats generated, namespace warnings only
ISO 20275 parsing ✅ Pass 3,819 codes parsed
Example instances ⚠️ Need migration Still use old EntityTypeEnum
Python dataclasses 📋 Not generated Blocked on example validation

Commands Reference

# Generate RDF (all formats)
gen-owl -f ttl schemas/20251121/linkml/01_custodian_name_modular.yaml 2>/dev/null > \
        schemas/20251121/rdf/01_custodian_name.owl.ttl

rdfpipe schemas/20251121/rdf/01_custodian_name.owl.ttl -o nt > \
        schemas/20251121/rdf/01_custodian_name.nt

rdfpipe schemas/20251121/rdf/01_custodian_name.owl.ttl -o json-ld > \
        schemas/20251121/rdf/01_custodian_name.jsonld

rdfpipe schemas/20251121/rdf/01_custodian_name.owl.ttl -o xml > \
        schemas/20251121/rdf/01_custodian_name.rdf

# Parse ISO 20275
python scripts/parse_iso20275_codes.py

# Validate (once examples migrated)
linkml-validate -s schemas/20251121/linkml/01_custodian_name_modular.yaml \
                schemas/20251121/examples/*.yaml

Session Timeline

  1. Started: Reviewed previous work (AgentTypeEnum, ReconstructionActivity refactoring)
  2. Fixed: Removed deprecated entity_type import causing validation failures
  3. Generated: Complete RDF ontology in 4 serialization formats (138-403 KB)
  4. Parsed: ISO 20275 legal form codes (3,819 codes, 117 jurisdictions)
  5. Documented: Created 3 comprehensive documentation files (21 KB total)
  6. Completed: All planned immediate tasks finished

Success Metrics

✅ RDF Ontology: 138 KB Turtle, 403 KB N-Triples, 289 KB RDF/XML, 335 KB JSON-LD
✅ Legal Forms: 3,819 ISO 20275 codes across 117 jurisdictions
✅ Documentation: 21 KB comprehensive guides
✅ Schema Integrity: All 84 modules load without errors
✅ Ontology Alignments: 12 base ontologies integrated

Next Agent: Focus on updating example instances to use new legal entity model
Estimated Time: 1-2 hours (10-15 example files to migrate)
Difficulty: Medium (requires understanding class structure vs primitives)