# Archive Notes - November 11, 2025

## Purpose
This directory contains archived backup files that have been superseded by the master dataset `globalglam-20251111.yaml`.

## Archived Files

### 1. unified_global_heritage_institutions.yaml.backup
- **Size**: 24 MB
- **Institutions**: 4,036
- **Date**: November 10, 2025 10:18
- **Reason**: Superseded by master dataset (13,502 institutions)
- **Status**: Incomplete backup from intermediate merge step

### 2. unified_global_heritage_institutions.yaml.backup2
- **Size**: 24 MB
- **Institutions**: 4,036
- **Date**: November 10, 2025 11:56
- **Reason**: Superseded by master dataset (13,502 institutions)
- **Status**: Incomplete backup from intermediate merge step

### 3. unified_global_heritage_institutions_backup_20251111_092645.yaml
- **Size**: 24 MB
- **Institutions**: 4,036
- **Date**: November 11, 2025 09:26
- **Reason**: Superseded by master dataset (13,502 institutions)
- **Status**: Timestamped backup from pre-final merge state

## Why These Files Were Archived

All three backup files contain **only 4,036 institutions**, representing incomplete data from intermediate merge steps. The authoritative master dataset `globalglam-20251111.yaml` contains **13,502 institutions** (48.0% increase after deduplication from 25,963 raw records).

### Key Differences

| Aspect | Archived Backups | Master Dataset |
|--------|------------------|----------------|
| Institutions | 4,036 | 13,502 |
| Coverage | Partial (1-2 countries) | 18 countries |
| Wikidata Coverage | ~30% | 55.7% (7,520 institutions) |
| Geocoding | ~40% | 60.6% (8,178 institutions) |
| Status | Intermediate state | Final merged dataset |

## Restoration Instructions

If you need to restore these files:

```bash
# Copy back to parent directory
cp archive/unified_global_heritage_institutions.yaml.backup ../

# Rename if needed
mv ../unified_global_heritage_institutions.yaml.backup \
   ../unified_global_heritage_institutions.yaml.restored
```

⚠️ **WARNING**: These files should NOT be used for production. They contain incomplete data and have been superseded by the master dataset.

## Deletion Policy

These files may be safely deleted after:
- 30 days (December 11, 2025)
- Verification that master dataset is stable
- No outstanding issues requiring historical comparison

## Related Documentation

- `../FILE_STATUS.md` - Current file authority documentation
- `../README.md` - Master dataset overview
- `../DATASET_STATISTICS.yaml` - Statistical analysis of master dataset

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**Archived**: November 11, 2025  
**Archived By**: OpenCODE AI Assistant  
**Total Size**: 72 MB (3 files × 24 MB)