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README.md

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+---
+license: cc-by-nc-4.0
+---
+
+# ClaimReview 2025Q4
+
+## Links
+
+- 📑 ArXiv: [https://arxiv.org/abs/2607.23514](https://arxiv.org/abs/2607.23514)
+- 💻 Code: [https://github.com/TrustworthyComp/Rethink-MAFC-Eval](https://github.com/TrustworthyComp/Rethink-MAFC-Eval)
+- 🤗 HF Daily Paper: [https://huggingface.co/papers/2607.23514](https://huggingface.co/papers/2607.23514)
+
+ClaimReview 2025Q4 is a curated benchmark of recent fact-checking claims and verdicts collected from IFCN-aligned fact-checking organizations.  
+This release contains **901** English claim-verification instances published between **2025-10-01** and **2025-12-31**, and is designed for evaluating automated fact-checking systems under a dynamic, time-sensitive setting.
+
+## NEWS
+
+- **2026-07-26** 📄 – Preprint released on [arXiv](https://arxiv.org/abs/2607.23514).
+- **2026-07-23** 🏆 – Accepted by MM-2026; see you in Brazil! 🇧🇷
+- **2026-07-15** 🎉 – Source code is publicly released on [GitHub](https://github.com/TrustworthyComp/Rethink-MAFC-Eval); contributions and feedback are welcome!
+
+## Dataset
+
+The dataset file is:
+
+- `claim_review_2025q4.json`
+
+Each instance follows the structure below:
+
+```json
+{
+  "claim": "The claim text itself.",
+  "label": "One of: SUPPORTED, REFUTED, NEI.",
+  "review_url": "URL of the source fact-check article.",
+  "fact_checker": {
+    "name": "Fact-checking organization name.",
+    "country": "Country of the fact-checking organization.",
+    "language": "Language of the fact-check article.",
+    "website": "Official website of the organization.",
+    "ifcn_url": "IFCN profile URL of the organization.",
+    "avatar": "IFCN-hosted avatar image URL.",
+    "domain": "Primary web domain of the organization."
+  },
+  "date_published": "Publication date of the fact-check article (YYYY-MM-DD)."
+}
+```
+
+## Dataset Statistics
+
+- Total instances: **901**
+- Label distribution:
+  - **REFUTED**: 606
+  - **NEI**: 169
+  - **SUPPORTED**: 126
+- Fact-checking organizations: **14**
+- Countries covered: **7**
+- Date range: **2025-10-01** to **2025-12-31**
+
+## Label Definitions
+
+- `SUPPORTED`: The claim is supported by the arguments and evidence presented. 
+- `REFUTED`: The claim is contradicted by the arguments and evidence presented.
+- `NEI`: The presented evidence is not enough to support or refute the claim. It applies when the evidence either explicitly indicates that relevant evidence cannot be found or leaves certain aspects of the claim neither supported nor refuted.
+
+## Intended Uses
+
+This dataset is used in our paper for sourcing up-to-date fact-checks:  
+[Novel Claim or Déjà Vu? Rethinking "Contamination-Free" Dynamic Evaluation for Multimodal Automated Fact-Checking](https://huggingface.co/papers/2607.23514).
+
+## Data Quality Notes
+
+- All records include all top-level fields shown in the schema above.
+- The dataset aggregates claims from multiple professional fact-checking outlets.
+- URLs and publisher metadata are preserved to support traceability and evidence lookup.
+
+## Quick Start
+
+```python
+import json
+
+with open("claim_review_2025q4.json", "r", encoding="utf-8") as f:
+    data = json.load(f)
+
+print(f"Loaded {len(data)} instances")
+print(data[0].keys())
+```
+
+## Citation
+
+If you use this dataset in your work, please cite:
+
+```bibtex
+@inproceedings{rethink_mafc_eval_2026,
+  title={Novel Claim or Déjà Vu? Rethinking "Contamination-Free" Dynamic Evaluation for Multimodal Automated Fact-Checking},
+  author={He, Haorui and Chen, Xinwen and Wen, Dacheng and Cheng, Reynold and Lau, Francis C. M. and Li, Yupeng},
+  booktitle={Proc.~of MM},
+  year={2026}
+}
+```
+
+## License
+
+This dataset card is released under **CC BY-NC 4.0**.  
+Please make sure your downstream use also complies with the terms and with the usage policies of the original fact-check sources.