@inproceedings{chen-etal-2019-large,
    title = "How Large a Vocabulary Does Text Classification Need? A Variational Approach to Vocabulary Selection",
    author = "Chen, Wenhu  and
      Su, Yu  and
      Shen, Yilin  and
      Chen, Zhiyu  and
      Yan, Xifeng  and
      Wang, William Yang",
    editor = "Burstein, Jill  and
      Doran, Christy  and
      Solorio, Thamar",
    booktitle = "Proceedings of the 2019 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers)",
    month = jun,
    year = "2019",
    address = "Minneapolis, Minnesota",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/N19-1352/",
    doi = "10.18653/v1/N19-1352",
    pages = "3487--3497"
}