@inproceedings{lu-etal-2026-geometry,
    title = "The Geometry of Safety Drifts: Step-level Refusal-Subspace Monitoring for Reasoning Large Language Models",
    author = "Lu, Liming  and
      Du, Anan  and
      Liu, Fanzhen  and
      Chen, Hechang  and
      Pang, Shuchao",
    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.1162/",
    pages = "26597--26612",
    ISBN = "979-8-89176-459-0"
}