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---
license: cc-by-4.0
pretty_name: 'Japanese Documents Dataset (PDF)'
language:
- ja
tags:
- pdf
- japanese
- document-understanding
- text-recognition
- ocr
- ai-research
- computer-vision
- text-extraction
size_categories:
- 1K<n<10K
---
# Japanese Documents Dataset (PDF)
*This dataset contains a curated collection of Japanese-language documents in PDF format. The corpus includes textbooks, research papers, news articles, public-domain books, and government publications written in Japanese. It is intended to support AI research in OCR, document understanding, and multilingual text recognition.*
## Contact
For queries or collaborations related to this dataset, contact:
- anoushka@kgen.io
- abhishek.vadapalli@kgen.io
## Supported Tasks
- **Task Categories**:
- Document Classification
- OCR and Text Recognition
- Layout and Structure Analysis
- Language Modeling for Japanese
- **Supported Tasks**:
- Extraction of Japanese text from PDFs
- OCR for Kanji, Hiragana, and Katakana scripts
- Classification of documents by type (academic, literary, official, educational)
- Benchmarking AI systems for Japanese document parsing and layout understanding
## Languages
- **Primary Language**: Japanese
- **Secondary Presence**: English numerals, Romanized Japanese, and technical symbols (common in bilingual or academic PDFs)
## Dataset Creation
### Curation Rationale
The dataset was curated to improve AI systems’ ability to read and understand Japanese-language documents, including vertically written text and mixed-script layouts, enabling more accurate OCR and multilingual NLP research.
### Source Data
- **Contributors**: Open-access Japanese libraries, educational institutions, and public-domain repositories.
- **Collection Process**: PDFs were collected from publicly available sources with clear open licenses permitting use for research and AI model training.
### Other Known Limitations
- **Bias**: Primarily educational and official documents; limited representation of informal or handwritten material
- **Layout Complexity**: Some documents contain vertical text or mixed Japanese-English layouts that may challenge OCR accuracy
- **Script Variation**: Coverage includes modern Japanese; limited inclusion of historical or classical scripts
## Intended Uses
### ✅ Direct Use
- Training OCR systems for Japanese text recognition
- Research in document layout understanding and vertical text OCR
- Digitization and analysis of Japanese-language academic or archival materials
### ❌ Out-of-Scope Use
- Identifying or profiling individuals from document content
- Commercial redistribution of copyrighted PDFs
- Use in surveillance, handwriting identification, or behavioral analysis
## License
CC BY 4.0
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