---
language:
- et
- ru
- de
task_categories:
- text-classification
- feature-extraction
tags:
- archives
- estonia
- historical-documents
- cultural-heritage
- multilingual
pretty_name: AIS archival titles
size_categories:
- 10M<n<100M
license: cc0-1.0
---

# 🏛️ Archival Information System (AIS) Dataset

## Dataset Description

This dataset contains over 10.9 million archival descriptions from the National Archives of Estonia (*Rahvusarhiiv*), extracted from apeEAD XML files based on information from the Archival Information System (*AIS*). The dataset provides comprehensive access to Estonia's cultural and historical heritage.

**Data Source Date**: 25th of September, 2023

## 📊 Dataset Summary

- **Total Records**: 10,986,604
- **Language Coverage** (*langdetect approximations*): Estonian 🇪🇪 (*64.2%*), Russian 🇷🇺 (*11.5%*), German 🇩🇪 (*6.8%*)
- **Temporal Range**: 1237- (700+ years of coverage)
- **Records with Dates**: 8,811,987 (80.2%)
- **Primary Archives**: ERA, EAA, LVMA, TLA, ERAF, VAMA, NLA, SAMA, LAMA, AM

## 🗂️ Dataset Structure

### 📋 Fields
- **title**: Archival description
- **level**: Hierarchical level of description (File, Item, Series, etc.)
- **date**: Date or date range
- **reference**: AIS reference number

### 📦 Archival Hierarchy Distribution
- **File**: 10,214,040 records (93.0%)
- **Item**: 520,391 records (4.7%)
- **Series**: 112,205 records (1.0%)
- **Subseries**: 107,697 records (1.0%)
- **Fonds**: 18,618 records (0.2%)
- **Subfonds**: 13,490 records (0.1%)

## 🗺️ Top Archive Collections

| Archive Code | Records | 🇬🇧 Description | 🇪🇪 Description |
|--------------|---------|-------------|----------------|
| ERA | 3,837,727 | National Archives of Estonia | Rahvusarhiiv |
| EAA | 3,057,822 | Estonian Historical Archives | Eesti ajalooarhiiv |
| LVMA | 1,334,750 | Lääne-Viru County Archives | Lääne-Viru maa-arhiiv |
| TLA | 726,040 | Tallinn City Archives | Tallinna Linnaarhiiv |
| ERAF | 698,516 | Estonian State Archives Party Archive | Eesti riigiarhiivi parteiarhiiv |
| VAMA | 590,508 | Valga County Archives | Valga maa-arhiiv |

## 💻 Usage Examples

```python
from datasets import load_dataset

# Load the full dataset
dataset = load_dataset("Rahvusarhiiv/AIS_archival_titles")

# Filter by archive
era_records = dataset.filter(lambda x: x['reference'].startswith('ERA'))

# Filter by level
file_level_records = dataset.filter(lambda x: x['level'] == 'File')
```

## 🎯 Use Cases

This dataset is valuable for:

- **Historical Research**: Access to Estonian historical documents and records
- **Digital Humanities**: Analysis of Estonian cultural heritage patterns
- **Language Studies**: Multilingual archival content analysis
- **Information Retrieval**: Training search and discovery systems
- **Temporal Analysis**: Historical trend analysis across centuries
- **Archive Science**: Understanding archival organization and structure

## ⚠️ Data Quality Notes

- Records include various document types from official records to personal documents
- Date ranges may be inaccurate or include estimated dates
- Some records may have incomplete metadata depending on original archival cataloging

## 🚫 Limitations

- Some historical dates may be approximate or use different calendar systems (*Julian/Gregorian*)
- Coverage varies between different archive collections

## 📖 Citation

```bibtex
@dataset{estonian_archives_2025,
  title={National Archives of Estonia (AIS) Dataset},
  author={Rahvusarhiiv},
  year={2025},
  publisher={Hugging Face},
  url={https://huggingface.co/datasets/Rahvusarhiiv/AIS_archival_titles}
}
```

## 📄 Source

Processed from apeEAD XML files provided by the National Archives of Estonia (*Rahvusarhiiv*), extracted from the Archival Information System (*AIS*). Source files dated September 25, 2023.

## ⚖️ License

Please refer to the National Archives of Estonia's data usage policies and terms of service.

## 📞 Contact

For questions about this dataset, please contact the National Archives of Estonia (*Rahvusarhiiv*).

---

*Dataset processed and compiled from the National Archives of Estonia's open data using apeEAD XML format.*