update tech report url and citation

README.md

@@ -50,7 +50,7 @@ configs:
 <p align="center">
 <a href="https://huggingface.co/collections/openbmb/ultradata">📦 UltraData Collection</a> |
 <a href="https://ultradata.openbmb.cn/">🌐 UltraData</a> |
-<a href="https://huggingface.co/datasets/openbmb/UltraData-Code/blob/main/tech_report/UltraData_Code_Tech_Report.pdf">📖 Tech Report</a> |
+<a href="https://arxiv.org/pdf/2610.23960">📖 Tech Report</a> |
 <a href="https://huggingface.co/datasets/openbmb/UltraData-Code">🤗 UltraData-Code</a> |
 <a href="https://huggingface.co/openbmb/UltraData-Code-L2-Classifier">🤗 UltraData-Code-L2 Classifier</a>
 </p>
@@ -128,11 +128,10 @@ The dataset is released under the [Open Data Commons Attribution License (ODC-By
 If you find this dataset useful in your research, please consider citing:
 
 ```bibtex
-@misc{ultradata_code,
-  title        = {{UltraData-Code}: From Raw Repositories to Algorithmically Dense and Task-Oriented Code Data},
-  author       = {Chengying Tu and Hengyu Zhao and Shuaikang Xue and Zhongming Qu and Jihao Zhou and Xinle Lin and Junshao Guo and Zixuan Fu and Qiang Ma and Jie Zhou and Chaojun Xiao and Hongfei Yan and Yudong Wang and Xu Han and Zhiyuan Liu and Maosong Sun},
-  year         = {2026},
-  publisher    = {Hugging Face},
-  howpublished = {\url{https://huggingface.co/datasets/openbmb/UltraData-Code}}
+@article{tu2026ultradata,
+  title={{UltraData-Code}: From Raw Repositories to Algorithmically Dense and Task-Oriented Code Data},
+  author={Tu, Chengying and Zhao, Hengyu and Xue, Shuaikang and Qu, Zhongming and Zhou, Jihao and Lin, Xinle and Guo, Junshao and Fu, Zixuan and Ma, Qiang and Zhou, Jie and others},
+  journal={arXiv preprint arXiv:2610.23960},
+  year={2026}
 }
 ```

README_ZH.md

@@ -7,7 +7,7 @@
 <p align="center">
 <a href="https://huggingface.co/collections/openbmb/ultradata">📦 UltraData 合集</a> |
 <a href="https://ultradata.openbmb.cn/">🌐 UltraData</a> |
-<a href="https://huggingface.co/datasets/openbmb/UltraData-Code/blob/main/tech_report/UltraData_Code_Tech_Report.pdf">📖 技术报告</a> |
+<a href="https://arxiv.org/pdf/2610.23960">📖 技术报告</a> |
 <a href="https://huggingface.co/datasets/openbmb/UltraData-Code">🤗 UltraData-Code</a> | 
 <a href="https://huggingface.co/openbmb/UltraData-Code-L2-Classifier">🤗 UltraData-Code-L2 分类器</a>
 </p>
@@ -83,11 +83,10 @@ UltraData-Stack-v3-L2 基于 [The Stack v3](https://huggingface.co/datasets/Hugg
 如果本数据集对您的研究有帮助，请考虑引用：
 
 ```bibtex
-@misc{ultradata_code,
-  title        = {{UltraData-Code}: From Raw Repositories to Algorithmically Dense and Task-Oriented Code Data},
-  author       = {Chengying Tu and Hengyu Zhao and Shuaikang Xue and Zhongming Qu and Jihao Zhou and Xinle Lin and Junshao Guo and Zixuan Fu and Qiang Ma and Jie Zhou and Chaojun Xiao and Hongfei Yan and Yudong Wang and Xu Han and Zhiyuan Liu and Maosong Sun},
-  year         = {2026},
-  publisher    = {Hugging Face},
-  howpublished = {\url{https://huggingface.co/datasets/openbmb/UltraData-Code}}
+@article{tu2026ultradata,
+  title={{UltraData-Code}: From Raw Repositories to Algorithmically Dense and Task-Oriented Code Data},
+  author={Tu, Chengying and Zhao, Hengyu and Xue, Shuaikang and Qu, Zhongming and Zhou, Jihao and Lin, Xinle and Guo, Junshao and Fu, Zixuan and Ma, Qiang and Zhou, Jie and others},
+  journal={arXiv preprint arXiv:2610.23960},
+  year={2026}
 }
 ```