@inproceedings{xu-etal-2021-unsupervised,
    title = "Unsupervised Out-of-Domain Detection via Pre-trained Transformers",
    author = "Xu, Keyang  and
      Ren, Tongzheng  and
      Zhang, Shikun  and
      Feng, Yihao  and
      Xiong, Caiming",
    editor = "Zong, Chengqing  and
      Xia, Fei  and
      Li, Wenjie  and
      Navigli, Roberto",
    booktitle = "Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers)",
    month = aug,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/2021.acl-long.85/",
    doi = "10.18653/v1/2021.acl-long.85",
    pages = "1052--1061"
}