| --- |
| pretty_name: Wiki-CoE |
| language: |
| - en |
| license: apache-2.0 |
| task_categories: |
| - question-answering |
| - visual-question-answering |
| tags: |
| - multimodal |
| - visual-question-answering |
| - chain-of-evidence |
| - document-understanding |
| - wiki |
| size_categories: |
| - 10K<n<100K |
| --- |
| |
| # Wiki-CoE |
|
|
| Wiki-CoE is a multimodal question-answering dataset for evaluating whether a model can answer questions from visual evidence and produce an explicit chain of evidence. Each example pairs a natural-language question with one or more Wikipedia page screenshots and asks the model to return both the answer and the supporting evidence. |
|
|
| The dataset is intended for research on visual reasoning, evidence localization, and chain-of-evidence style multimodal QA. |
|
|
| ## Dataset contents |
|
|
| The main release is under `release_strict_chainsplit_20260428_1338/`: |
|
|
| | File | Description | |
| |---|---:| |
| | `train.json` | training split, 35,210 examples | |
| | `test.json` | test split, 35,208 examples | |
| | `val_1000_seed42.json` | small validation subset, 1,000 examples | |
| | `split_report.json` | high-level split statistics | |
| | `val_1000_seed42_manifest.json` | validation subset indices | |
|
|
| Each example contains: |
|
|
| | Field | Description | |
| |---|---| |
| | `question` | input question | |
| | `answer` | short answer | |
| | `type` | reasoning type | |
| | `num_hops` | number of evidence hops | |
| | `evidence_chain` | ordered evidence screenshots, bounding boxes, and sub-questions | |
| | `evidences` | supporting evidence metadata | |
|
|
| ## Screenshot archive |
|
|
| The screenshot images are stored as a split archive under `release_assets/`. |
|
|
| To reconstruct the image directory: |
|
|
| ```bash |
| cat release_assets/screenshots_trimmed.tar.zst.part-* > screenshots_trimmed.tar.zst |
| tar --use-compress-program=unzstd -xf screenshots_trimmed.tar.zst |
| ``` |
|
|
| This creates: |
|
|
| ```text |
| screenshots_trimmed/ |
| ``` |
|
|
| The archive contains 76,000 PNG screenshots. SHA256 checksums for the archive parts are provided in `release_assets/screenshots_trimmed.tar.zst.sha256`. |
|
|
| ## Related resources |
|
|
| - Homepage: https://lpy.pxsec.cn |
| - Paper: https://arxiv.org/abs/2605.01284 |
| - Code: https://github.com/PeiYangLiu/CoE |
| - Wiki-CoE model checkpoint: https://huggingface.co/PeiyangLiu/CoE-Wiki-CoE-8B |
| - SlideVQA model checkpoint: https://huggingface.co/PeiyangLiu/CoE-SlideVQA-8B |
|
|
