@inproceedings{zheng-etal-2026-hmpo, title = "{HMPO}: Hybrid Median-length Policy Optimization for Chain-of-Thought Compression", author = "Zheng, Minghui and Chen, Hongxu and Ren, Huimin and Xin, Hongsheng and Qu, Xiaoyang and Wang, Ze and Yang, Shuling and Peng, Ziyu and Zhang, Kaike and Pan, Zhou and Zhan, Kun", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.885/", pages = "20418--20433", ISBN = "979-8-89176-459-0" }