@inproceedings{zhang-etal-2026-answer,
    title = "To Answer or to Abstain: Mitigating Search-Agent Hallucinations via Abstention-Aware Reinforcement Learning",
    author = "Zhang, Fengji  and
      Fan, Tianyu  and
      Zheng, Yuxiang  and
      Niu, Xinyao  and
      Huang, Chengen  and
      Keung, Jacky  and
      Chen, Bei",
    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.161/",
    pages = "3696--3718",
    ISBN = "979-8-89176-459-0"
}