@inproceedings{an-xu-2026-teaching,
    title = "Teaching {LLM}s to Abstain via Fine-Grained Semantic Confidence Reward",
    author = "An, Hao  and
      Xu, Yang",
    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.243/",
    pages = "5546--5566",
    ISBN = "979-8-89176-459-0"
}