@inproceedings{fang-etal-2026-proximity,
    title = "Proximity-Based Multi-Turn Optimization: Practical Credit Assignment for {LLM} Agent Training",
    author = "Fang, Yangyi  and
      Lin, Jiaye  and
      Fu, Xiaoliang  and
      Qin, Cong  and
      Shi, Haolin  and
      Liu, Chang",
    editor = "Li, Yunyao  and
      Rehm, Georg  and
      Tu, Mei",
    booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics ({ACL} 2026)",
    month = jul,
    year = "2026",
    address = "San Diego, California, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl/2026.acl-industry.19/",
    pages = "285--307",
    ISBN = "979-8-89176-394-4"
}