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