README.md

---
task_categories:
- visual-question-answering
- table-question-answering
language:
- ja
license: cc-by-4.0 
tags:
- table-qa
- visual-qa
- japanese
- ntcir
size_categories:
- 10K<n<100K
---

# TableCellQA Dataset

This dataset is for Table Question Answering (Table QA), derived from tables in Japanese annual securities reports used in the NTCIR-18 U4 shared task. 

This dataset was proposed in our paper: [Enhancing Large Vision-Language Models with Layout Modality for Table Question Answering on Japanese Annual Securities Reports](https://arxiv.org/abs/2505.17625).

## Key Differences from Original Dataset

1. **Multimodal Support**: This dataset supports multimodal inputs (image, layout, text) for comprehensive table understanding
2. **Direct Cell Value Extraction**: Unlike the original task, this dataset focuses on direct extraction of cell values, removing the need for arithmetic operations or other transformations

## Dataset Description

- **Language**: Japanese
- **Task**: Table Question Answering
- **Format**: Images with OCR text and question-answer pairs
- **Source**: NTCIR-18 U4 Task

## Dataset Structure

Each example contains:
- `id`: Unique identifier
- `sample_id`: Original sample ID
- `image`: Table image (PNG format)
- `text_w_bbox`: Raw OCR data with bounding box information (JSON format)
- `question`: Question about the table
- `answer`: Answer to the question
- `question_type`: Type of question (table_qa)
- `dataset`: Dataset name (ntcir18-u4)

## Usage

```python
from datasets import load_dataset
import json

dataset = load_dataset("stockmark/u4-table-cell-qa")

# Access OCR data with bounding boxes
sample = dataset["train"][0]
ocr_data = json.loads(sample["text_w_bbox"])

# Each OCR element contains:
# - "box": [x1, y1, x2, y2] - bounding box coordinates
# - "text": extracted text
# - "label": classification label (if available)
# - "words": word-level information (if available)

for ocr_item in ocr_data:
    print(f"Text: {ocr_item['text']}")
    print(f"Box: {ocr_item['box']}")
```

## License

This dataset is licensed under the [Creative Commons Attribution 4.0 International License (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/).

## Citation

### Original Dataset

This dataset is based on the NTCIR-U4 task. We thank the original authors for making their data available.

**Data Source:**
- 本データは金融庁 EDINET で公開されている有価証券報告書を基に編集・加工したものです。
- This data is based on securities reports published on EDINET (Financial Services Agency of Japan), which have been edited and processed.

**Attribution:**
本データセットを利用する際は、本データセットの作者、および元のデータソースの両方に対するクレジット（帰属表示）をお願いします。
When using this dataset, please provide attribution to both the creator of this dataset and the original data source.
- 出典：EDINET（金融庁）/ Source: EDINET (Financial Services Agency of Japan)
- 編集・加工：ストックマーク株式会社（NTCIR-18 U4 タスク関連データ）/ Edited and processed by: Stockmark Inc. (NTCIR-18 U4 Task related data)

**References:**
- Task Overview: https://sites.google.com/view/ntcir18-u4/
- Data and Code (GitHub): https://github.com/nlp-for-japanese-securities-reports/ntcir18-u4

```bibtex
@article{EMTCIR2024,
 title  = {Understanding Tables in Financial Documents: Shared Tasks for Table Retrieval and Table QA on Japanese Annual Security Reports},
 author = {Yasutomo Kimura and Eisaku Sato and Kazuma Kadowaki and Hokuto Ototake},
 journal = {Proceedings of the SIGIR-AP 2024 Workshops EMTCIR 2024},
 month  = {12},
 year  = {2024},
 url   = {https://ceur-ws.org/Vol-3854/}
}
```

### Our Paper

If you use this dataset, please cite our paper:

```bibtex
@article{aida2025enhancinglargevisionlanguagemodels,
      title={Enhancing Large Vision-Language Models with Layout Modality for Table Question Answering on Japanese Annual Securities Reports}, 
      author={Hayato Aida and Kosuke Takahashi and Takahiro Omi},
      year={2025},
      eprint={2505.17625},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2505.17625}, 
}
```

### This Dataset

If you use this processed dataset, please also cite:

```bibtex
@dataset{table_cell_qa_2025,
  title={TableCellQA Dataset},
  author={Hayato Aida},
  year={2025},
  publisher={Hugging Face},
  url={https://huggingface.co/datasets/stockmark/u4-table-cell-qa}
}
```