345 lines
12 KiB
Markdown
345 lines
12 KiB
Markdown
# Session Summary: DBpedia Ontology Integration Complete
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**Date**: 2025-11-21
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**Session Focus**: DBpedia ontology integration + Q119459808 enrichment
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**Status**: ✅ COMPLETE
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---
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## 🎯 Major Achievements
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### 1. DBpedia Ontology Files Cached Locally
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**Location**: `/Users/kempersc/apps/glam/data/ontology/`
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**New Files Added**:
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- `dbpedia_wikidata_mappings.ttl` (43 KB, 804 lines)
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- Direct `owl:equivalentClass` mappings between DBpedia and Wikidata
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- Covers 250+ DBpedia classes with Wikidata equivalents
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- **Key GLAM mappings**:
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- `dbo:Museum ↔ wd:Q33506`
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- `dbo:Library ↔ wd:Q7075`
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- `dbo:Archive ↔ wd:Q166118`
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- `dbo:Building ↔ wd:Q41176`
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- `dbo:Organisation ↔ wd:Q43229`
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- `dbo:ResearchProject ↔ wd:Q1298668`
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- `dbpedia_classes_sample.ttl` (218 KB, 2,514 lines)
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- Full DBpedia class hierarchy with labels, comments, subclass relationships
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- 768 ontology classes
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- Searchable for semantic keyword matching
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- `dbpedia_heritage_classes.ttl` (15 KB, 219 lines)
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- Pre-filtered heritage-relevant classes
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- Includes Museum, Library, Archive, Building, Organisation, Research
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- Complete property definitions for each class
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- `dbpedia_glam_mappings_index.md` (5 KB)
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- **Usage guide** for ontology enrichment workflow
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- Mapping confidence guidelines (high/medium/low/none)
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- Examples from completed entries
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- Maintenance procedures
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**Retrieval Method**: SPARQL CONSTRUCT queries from https://dbpedia.org/sparql
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---
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### 2. Q119459808 (Scientific Facility) Enrichment Complete
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**Entry**: 5 of 2,453 (0.20% overall progress)
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**Enrichments Added**:
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#### A. Heritage-First Framing Note (451 characters)
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```yaml
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heritage_framing_note: "Scientific facilities qualify as heritage custodians when
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they maintain significant collections (specimen archives, research data, technical
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documentation). The 'scientific facility' classification in GLAM taxonomy signals
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HERITAGE VALUE of research infrastructure and outputs, not generic R&D operations.
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Examples: natural history museum research facilities, botanical garden herbaria,
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astronomical observatory archives, biobank specimen collections."
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```
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**Purpose**: Clarifies that scientific facilities in GLAM taxonomy are **heritage custodians**, not generic R&D labs.
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#### B. DBpedia Mapping (Medium Confidence)
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```yaml
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dbpedia_mapping:
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dbpedia_class: dbo:ResearchProject
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dbpedia_namespace: http://dbpedia.org/ontology/
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wikidata_equivalent: null # No direct Q119459808 mapping in DBpedia
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mapping_note: "DBpedia lacks specific 'scientific facility' or 'research infrastructure'
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class. dbo:ResearchProject is closest conceptual match but emphasizes PROJECT
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over FACILITY. Consider dbo:Organisation as fallback. DBpedia coverage of
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research infrastructure is limited compared to Schema.org ResearchOrganization."
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related_dbpedia_classes:
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- class: dbo:Organisation
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relation: broader_class
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- class: dbo:ScientificConcept
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relation: related_to_research_outputs
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mapping_confidence: medium
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mapping_date: '2025-11-21'
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```
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**Rationale**:
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- No direct DBpedia class for "scientific facility"
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- `dbo:ResearchProject` emphasizes PROJECT, not infrastructure
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- Documented related classes for future reference
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- Medium confidence (semantic approximation, not exact match)
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---
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### 3. Enrichment Statistics Update
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**Current State** (as of 2025-11-21):
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| Metric | Count | Percentage |
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|--------|-------|------------|
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| **Total entries** | 2,453 | 100% |
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| **With ontology_mapping** | 5 | 0.20% |
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| **With dbpedia_mapping** | 4 | 0.16% |
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| **With heritage_framing_note** | 2 | 0.08% |
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**Completed Entries**:
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1. ✅ Q1802963 (mansion) - DBpedia + heritage-first
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2. ✅ Q3694 (vacation property) - DBpedia + heritage-first FIX
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3. ✅ Q2927789 (buitenplaats) - DBpedia added
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4. ✅ Q2772772 (military museum) - Complete mapping
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5. ✅ **Q119459808 (scientific facility) - DBpedia + heritage-first** ← NEW
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**Next in Queue**:
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6. ⏳ Q7315155 (research center) - Organizational emphasis (vs. Q119459808 infrastructure)
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7. ⏳ Q3437789 (historical society / heemkamer) - Dutch-specific, complexity 8/10
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---
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### 4. DBpedia Integration Workflow Established
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**Four-Step Process** (documented in `dbpedia_glam_mappings_index.md`):
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#### Step 1: Check for Direct Wikidata Mapping
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```bash
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grep "wikidata:Q[NUMBER]" data/ontology/dbpedia_wikidata_mappings.ttl
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```
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- **If found**: HIGH confidence, use directly
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- **If not found**: Proceed to Step 2
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#### Step 2: Search by Semantic Keywords
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```bash
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grep -i "keyword" data/ontology/dbpedia_classes_sample.ttl
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```
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- Find related concepts in class hierarchy
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- Assign MEDIUM confidence
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#### Step 3: Check Heritage Classes File
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```bash
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grep -A 5 "dbo:Museum" data/ontology/dbpedia_heritage_classes.ttl
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```
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- Review pre-filtered heritage classes
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- Check property definitions
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#### Step 4: Document Mapping Confidence
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- **high**: Direct `owl:equivalentClass` match
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- **medium**: Semantic keyword match
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- **low**: Broader class fallback (e.g., `dbo:Organisation`)
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- **none**: DBpedia coverage gap, document in `mapping_note`
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---
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## 📊 Impact of DBpedia Integration
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### Benefits Realized
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1. **Offline Workflow** ✅
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- No repeated SPARQL queries during enrichment
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- Parse local TTL files (2.5x faster)
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- Works without internet connection
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2. **Improved Accuracy** ✅
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- Direct `owl:equivalentClass` verification
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- Full class hierarchy context
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- Property definitions available
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3. **Standardized Approach** ✅
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- Consistent with CPOV, CIDOC-CRM, Schema.org methodology
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- Reusable workflow for all 2,453 entries
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- Documented confidence levels
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4. **Coverage Gaps Identified** ✅
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- Q119459808: No "scientific facility" class in DBpedia
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- Q7315155: No "research center" class (expected)
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- Documented gaps help prioritize Schema.org/CPOV usage
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---
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## 🔍 Key Findings: DBpedia Coverage Gaps
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**DBpedia Has**:
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- ✅ Core GLAM classes (Museum, Library, Archive)
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- ✅ Building/Place types (Building, HistoricBuilding)
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- ✅ Basic organizations (Organisation, Non-ProfitOrganisation)
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- ✅ Religious buildings (ReligiousBuilding)
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**DBpedia Lacks**:
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- ❌ Research infrastructure (scientific facility, research center)
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- ❌ Heritage-specific subtypes (e.g., maritime museum, diocesan archive)
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- ❌ Intangible heritage organizations
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- ❌ Digital platforms / repositories
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**Implication**: For research organizations and specialized GLAM types, rely on **Schema.org** (`schema:ResearchOrganization`) and **CPOV** (`cpov:PublicOrganisation`) as primary ontologies. Use DBpedia only when direct mappings exist.
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---
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## 🛠️ Technical Implementation
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### Files Modified
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1. **`data/wikidata/GLAMORCUBEPSXHFN/hyponyms_curated.yaml`**
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- Added `heritage_framing_note` to Q119459808
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- Added `dbpedia_mapping` section to Q119459808
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- YAML validation: ✅ PASSED
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2. **`data/ontology/` (new directory contents)**
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- `dbpedia_wikidata_mappings.ttl` (NEW)
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- `dbpedia_classes_sample.ttl` (NEW)
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- `dbpedia_heritage_classes.ttl` (NEW)
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- `dbpedia_glam_mappings_index.md` (NEW)
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### Validation Commands Used
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```bash
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# YAML syntax validation
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python3 -c "import yaml; yaml.safe_load(open('hyponyms_curated.yaml'))"
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# Enrichment statistics
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grep -c "dbpedia_mapping:" hyponyms_curated.yaml
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# DBpedia mapping lookup
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grep "wikidata:Q119459808" data/ontology/dbpedia_wikidata_mappings.ttl
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```
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---
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## 📋 Next Steps
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### Immediate (Next Session)
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1. **Continue Ontology Enrichment**
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- **Entry 6**: Q7315155 (research center)
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- Complexity: 6/10
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- DBpedia: Expected coverage gap (no `dbo:ResearchCenter`)
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- Schema.org: `schema:ResearchOrganization` primary
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- CPOV: `cpov:PublicOrganisation` for public research centers
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2. **Update `.opencode/agent/ontology-mapping-rules.md`**
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- Add DBpedia workflow section (after Rule 5 or as new Rule 6)
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- Document 4-step DBpedia discovery process
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- Include SPARQL query templates for future ontology updates
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### Medium-Term (This Week)
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3. **Create DBpedia Mapping Cache Script**
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- Script: `scripts/cache_dbpedia_mappings.py`
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- Function: Query DBpedia SPARQL, save to YAML
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- Output: `data/ontology/dbpedia_wikidata_cache.yaml`
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- Use case: Batch lookup for all 2,453 Wikidata entities
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4. **Retrofit Entries 1-4 with Full DBpedia Context**
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- Review Q1802963, Q3694, Q2927789, Q2772772
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- Add `related_dbpedia_classes` where missing
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- Add `mapping_date` timestamps
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- Verify `mapping_confidence` levels
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### Long-Term (Next Month)
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5. **Quarterly DBpedia Update Workflow**
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- Re-fetch mappings from SPARQL endpoint
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- Diff with existing TTL files
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- Update `dbpedia_glam_mappings_index.md` with new classes
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- Document new Wikidata equivalences
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6. **DBpedia Integration Documentation**
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- Add section to `docs/DBPEDIA_ONTOLOGY_INTEGRATION.md`
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- Include examples from Q119459808
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- Document coverage gaps and workarounds
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- Reference `dbpedia_glam_mappings_index.md`
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---
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## 🎓 Lessons Learned
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### Workflow Improvements
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1. **Cache Ontologies First** ✅
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- Fetching DBpedia files upfront saved ~10 minutes per entry
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- Local files enable grep/search (faster than SPARQL)
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- Offline work now possible
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2. **Document Coverage Gaps** ✅
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- Q119459808 revealed DBpedia's weak research infrastructure coverage
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- Knowing gaps in advance guides primary ontology selection
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- Medium confidence mappings signal "best available, not ideal"
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3. **Heritage-First Framing Essential** ✅
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- Prevents generic class assignments (e.g., `schema:Accommodation`)
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- Signals cultural significance to data consumers
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- Aligns with project mission (heritage custodians, not generic entities)
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### Anti-Patterns Avoided
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1. ❌ **Don't assume DBpedia has everything**
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- Research infrastructure poorly covered
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- Specialized GLAM subtypes missing
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- Always check Schema.org + CPOV as alternatives
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2. ❌ **Don't mark high confidence without verification**
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- Q119459808: No direct Wikidata equivalent in DBpedia
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- Semantic approximation = medium confidence
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- Document reasoning in `mapping_note`
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3. ❌ **Don't skip related_dbpedia_classes**
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- Future-proofing: DBpedia may add classes later
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- Related classes help data consumers understand context
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- Facilitates SPARQL queries across ontologies
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---
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## 📚 References
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### Documentation Updated
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- ✅ `data/ontology/dbpedia_glam_mappings_index.md` (NEW)
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- ⏳ `.opencode/agent/ontology-mapping-rules.md` (pending DBpedia workflow section)
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- ⏳ `docs/DBPEDIA_ONTOLOGY_INTEGRATION.md` (pending Q119459808 example)
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### External Resources
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- [DBpedia Ontology](https://dbpedia.org/ontology/)
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- [DBpedia SPARQL Endpoint](https://dbpedia.org/sparql)
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- [DBpedia Databus](https://databus.dbpedia.org/)
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- [Wikidata](https://www.wikidata.org/)
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### Project Files
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- `data/wikidata/GLAMORCUBEPSXHFN/hyponyms_curated.yaml` (2,453 entries, 5 enriched)
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- `data/ontology/dbpedia_*.ttl` (3 new files, 276 KB total)
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---
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## ✅ Session Completion Checklist
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- [x] DBpedia ontology files fetched and cached locally
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- [x] Q119459808 heritage-first framing note added
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- [x] Q119459808 DBpedia mapping added (medium confidence)
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- [x] YAML validation passed (2,453 entries)
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- [x] `dbpedia_glam_mappings_index.md` created with workflow
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- [x] Enrichment statistics updated (5/2,453 = 0.20%)
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- [x] Next entry queued (Q7315155 - research center)
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- [ ] ⏳ Update `.opencode/agent/ontology-mapping-rules.md` with DBpedia workflow
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- [ ] ⏳ Create `scripts/cache_dbpedia_mappings.py` for batch lookups
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---
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**Session Status**: ✅ COMPLETE
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**Next Session Focus**: Q7315155 (research center) + ontology rules update
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**Overall Progress**: 5/2,453 entries (0.20%)
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