Update README.md

README.md

@@ -10,5 +10,13 @@ We extend the context window to 32k.
 # Citation
 If you find our model, data, or evaluation code useful, please kindly cite our paper:
 ```bib
-
+@misc{liu2025uniformheterogeneoustailoringpolicy,
+      title={From Uniform to Heterogeneous: Tailoring Policy Optimization to Every Token's Nature}, 
+      author={Zheng Liu and Mengjie Liu and Siwei Wen and Mengzhang Cai and Bin Cui and Conghui He and Wentao Zhang},
+      year={2025},
+      eprint={2509.16591},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2509.16591}, 
+}
 ```