Update dataset card: add task category, language, and paper link

Hi! I'm Niels from the community science team at Hugging Face.

This pull request improves the dataset card for the OpenResearcher Corpus by:
1. Adding the `text-retrieval` task category to the YAML metadata.
2. Adding the `en` language tag.
3. Including a link to the associated research paper: [OpenResearcher: A Fully Open Pipeline for Long-Horizon Deep Research Trajectory Synthesis](https://huggingface.co/papers/2603.20278).
4. Updating the citation to the BibTeX provided in the official repository.

README.md

@@ -18,7 +18,12 @@ dataset_info:
     num_examples: 14878084
   download_size: 29752310440
   dataset_size: 48560880327
+task_categories:
+- text-retrieval
+language:
+- en
 ---
+
 <div style="display: flex; align-items: center; justify-content: center; gap: 8px;">
   <img src="imgs/or-logo1.png" style="height: 84px; width: auto;">
   <img src="imgs/openresearcher-title.svg" style="height: 84px; width: auto;">
@@ -26,13 +31,13 @@ dataset_info:
 
 
 <div align="center">
+  <a href="https://huggingface.co/papers/2603.20278"><img src="https://img.shields.io/badge/arXiv-2603.20278-B31B1B.svg?style=for-the-badge&logo=arXiv&logoColor=white" alt="Paper"></a>
   <a href="https://x.com/DongfuJiang/status/2020946549422031040"><img src="https://img.shields.io/badge/Twitter-000000?style=for-the-badge&logo=X&logoColor=white" alt="Blog"></a>
   <a href="https://boiled-honeycup-4c7.notion.site/OpenResearcher-A-Fully-Open-Pipeline-for-Long-Horizon-Deep-Research-Trajectory-Synthesis-2f7e290627b5800cb3a0cd7e8d6ec0ea?source=copy_link"><img src="https://img.shields.io/badge/Blog-4285F4?style=for-the-badge&logo=google-chrome&logoColor=white" alt="Blog"></a>
     <a href="https://github.com/TIGER-AI-Lab/OpenResearcher"><img src="https://img.shields.io/badge/Github-181717?style=for-the-badge&logo=github&logoColor=white" alt="Blog"></a>
   <a href="https://huggingface.co/datasets/OpenResearcher/OpenResearcher-Dataset"><img src="https://img.shields.io/badge/Dataset-FFB7B2?style=for-the-badge&logo=huggingface&logoColor=ffffff" alt="Dataset"></a>
   <a href="https://huggingface.co/OpenResearcher/Nemotron-3-Nano-30B-A3B"><img src="https://img.shields.io/badge/Model-FFD966?style=for-the-badge&logo=huggingface&logoColor=ffffff" alt="Model"></a>
   <a href="https://huggingface.co/spaces/OpenResearcher/OpenResearcher"><img src="https://img.shields.io/badge/Demo-F97316.svg?style=for-the-badge&logo=gradio&logoColor=white" alt="Demo"></a>
-  <!-- <a href="https://wandb.ai/dongfu/nano-v3-sft-search"><img src="https://img.shields.io/badge/WandB%20Logs-48B5A3?style=for-the-badge&logo=weightsandbiases&logoColor=white" alt="WandB Logs"></a> -->
   <a href="https://huggingface.co/datasets/OpenResearcher/OpenResearcher-Eval-Logs/tree/main"><img src="https://img.shields.io/badge/Eval%20Logs-755BB4?style=for-the-badge&logo=google-sheets&logoColor=white" alt="Eval Logs"></a> 
 </div>
 </div>
@@ -43,7 +48,7 @@ dataset_info:
 </p>
 
 ## OpenResearcher Corpus 
-This dataset contains a carefully curated **~11B-tokens** corpus, which serves as an offline search engine for our data generation process, eliminating the need for external Search APIs. Details on the corpus curation process are available in our [blog](https://boiled-honeycup-4c7.notion.site/OpenResearcher-A-Fully-Open-Pipeline-for-Long-Horizon-Deep-Research-Trajectory-Synthesis-2f7e290627b5800cb3a0cd7e8d6ec0ea?source=copy_link).
+This dataset contains a carefully curated **~11B-tokens** corpus, which serves as an offline search engine for our data generation process, eliminating the need for external Search APIs. It was introduced in the paper [OpenResearcher: A Fully Open Pipeline for Long-Horizon Deep Research Trajectory Synthesis](https://huggingface.co/papers/2603.20278). Details on the corpus curation process are available in our [blog](https://boiled-honeycup-4c7.notion.site/OpenResearcher-A-Fully-Open-Pipeline-for-Long-Horizon-Deep-Research-Trajectory-Synthesis-2f7e290627b5800cb3a0cd7e8d6ec0ea?source=copy_link).
 
 ## Format      
 Each row in the dataset contains the following fields:
@@ -102,17 +107,16 @@ for idx, score in zip(indices[0], scores[0]):
     if doc:
         print(f"Score: {score:.4f}")
         print(f"URL: {doc['url']}")
-        print(f"Text: {doc['text'][:200]}...\n")
+        print(f"Text: {doc['text'][:200]}...
+")
 ```
 
 ## Citation 
 ```bibtex
-@misc{li2025openresearcher,
-  title={OpenResearcher: A Fully Open Pipeline for Long-Horizon Deep Research Trajectory Synthesis},
-  author={Zhuofeng Li and Dongfu Jiang and Xueguang Ma and Haoxiang Zhang and Ping Nie and Yuyu Zhang and Kai Zou and Jianwen Xie and Yu Zhang and Wenhu Chen},
-  year={2025},
-  howpublished={\url{https://www.notion.so/OpenResearcher-A-Fully-Open-Pipeline-for-Long-Horizon-Deep-Research-Trajectory-Synthesis-2f7e290627b5800cb3a0cd7e8d6ec0ea}},
-  note={Notion Blog}
+@article{li2026openresearcher,
+  title={{OpenResearcher: A Fully Open Pipeline for Long-Horizon Deep Research Trajectory Synthesis}},
+  author={Li, Zhuofeng and Jiang, Dongfu and Ma, Xueguang and Zhang, Haoxiang and Nie, Ping and Zhang, Yuyu and Zou, Kai and Xie, Jianwen and Zhang, Yu and Chen, Wenhu},
+  journal={arXiv preprint arXiv:2603.20278},
+  year={2026}
 }
-```
-
+```