@inproceedings{su-etal-2025-haco,
    title = "{HAC}o-Det: A Study Towards Fine-Grained Machine-Generated Text Detection under Human-{AI} Coauthoring",
    author = "Su, Zhixiong  and
      Wang, Yichen  and
      Wan, Herun  and
      Zhang, Zhaohan  and
      Luo, Minnan",
    editor = "Che, Wanxiang  and
      Nabende, Joyce  and
      Shutova, Ekaterina  and
      Pilehvar, Mohammad Taher",
    booktitle = "Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
    month = jul,
    year = "2025",
    address = "Vienna, Austria",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/landing_page/2025.acl-long.1069/",
    pages = "22015--22036",
    ISBN = "979-8-89176-251-0"
}