@inproceedings{xiong-etal-2026-etr,
    title = "{ETR}: Entropy Trend Reward for Efficient Chain-of-Thought Reasoning",
    author = "Xiong, Xuan  and
      Liu, Huan  and
      Gu, Li  and
      Chi, Zhixiang  and
      Qiu, Yue  and
      YU, Yuanhao  and
      Wang, Yang",
    editor = "Liakata, Maria  and
      Moreira, Viviane P.  and
      Zhang, Jiajun  and
      Jurgens, David",
    booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics (Volume 1: Long Papers)",
    month = jul,
    year = "2026",
    address = "San Diego, California, United States",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl/2026.acl-long.799/",
    pages = "17576--17594",
    ISBN = "979-8-89176-390-6"
}