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JAPAN ISIL DATASET VALIDATION REPORT
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Generated: 2025-11-07T10:08:41.129274
Dataset: data/instances/japan/jp_institutions.yaml

VALIDATION SUMMARY
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Total Records:       12,065
Valid Records:       12,064 (99.99%)
Invalid Records:     1

INSTITUTION TYPE BREAKDOWN
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  LIBRARY               7,607 (63.05%)
  MUSEUM                4,356 (36.10%)
  ARCHIVE                 101 ( 0.84%)

GEOGRAPHIC COVERAGE
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Total Prefectures:   31

Top 10 Prefectures by Institution Count:
  TO          2,080
  KA            820
  NA            780
  FU            679
  HO            641
  AI            592
  SH            591
  MI            485
  YA            468
  SA            467

DATA QUALITY METRICS
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GHCID Coverage:      12,064 / 12,065 (99.99%)
Website URLs:        10,799 / 12,065 (89.51%)
Street Addresses:    12,045 / 12,065 (99.83%)
Postal Codes:        12,044 / 12,065 (99.83%)

VALIDATION ERRORS
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  [   1] Missing required fields: name

Sample Error Records (first 10):
  1. 
     ID: JP-1003853
     Error: Missing required fields: name

SCHEMA COMPLIANCE
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⚠️  WARN - Most records valid, minor issues detected

RECOMMENDATIONS
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⚠️  Website coverage at 89.5% - consider enriching from web
✅ Address coverage excellent (99.8%)
ℹ️  Only 31/47 prefectures represented - may be incomplete

NEXT STEPS
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1. Review sample error records if validation < 100%
2. Consider geocoding addresses to add lat/lon coordinates
3. Map prefecture codes to ISO 3166-2 (JP-01 through JP-47)
4. Merge with global dataset (NL, EUR, Latin America)
5. Export to GeoJSON for geographic visualization

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END OF REPORT
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