update tech report url and citation

README.md

@@ -76,7 +76,7 @@ default_config_name: UltraData-Code-L2
 <a href="https://huggingface.co/collections/openbmb/ultradata">📦 UltraData Collection</a> |
 <a href="https://ultradata.openbmb.cn/">🌐 UltraData</a> |
 <a href="https://huggingface.co/collections/openbmb/minicpm5">🤗 MiniCPM5 Series</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/openbmb/UltraData-Code-L2-Classifier">🤗 UltraData-Code-L2 Classifier</a>
 </p>
 
@@ -195,11 +195,10 @@ The dataset should not contain plaintext secrets or unauthorized personal data.
 If you find **UltraData-Code** 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

@@ -8,7 +8,7 @@
 <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/collections/openbmb/minicpm5">🤗 MiniCPM5 系列</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/openbmb/UltraData-Code-L2-Classifier">🤗 UltraData-Code-L2 分类器</a>
 </p>
 
@@ -128,11 +128,10 @@ UltraData-Code 是基于 [UltraData](https://ultradata.openbmb.cn/) [L0-L4 分
 如果 **UltraData-Code** 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}
 }
 ```