@inproceedings{zou-etal-2026-cobra,
    title = "{C}o{BRA}: Learning Tool-Use Boundaries via Counterfactual Margins",
    author = "Zou, Wenhao  and
      Liu, Xianglong  and
      Bi, Wendong  and
      Wang, Hanjie  and
      Zhao, Simin  and
      Zhi, Gong",
    editor = "Lee, Hung-Yi  and
      Dev, Sunipa  and
      Li, Jessy  and
      Elliott, Desmond",
    booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {EMNLP} 2026",
    month = oct,
    year = "2026",
    address = "Budapest, Hungary",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2026.findings-emnlp.1325/",
    pages = "28092--28110",
    ISBN = "979-8-89176-462-0"
}