@inproceedings{zhang-etal-2021-unsupervised,
    title = "Unsupervised Concept Representation Learning for Length-Varying Text Similarity",
    author = "Zhang, Xuchao  and
      Zong, Bo  and
      Cheng, Wei  and
      Ni, Jingchao  and
      Liu, Yanchi  and
      Chen, Haifeng",
    editor = "Toutanova, Kristina  and
      Rumshisky, Anna  and
      Zettlemoyer, Luke  and
      Hakkani-Tur, Dilek  and
      Beltagy, Iz  and
      Bethard, Steven  and
      Cotterell, Ryan  and
      Chakraborty, Tanmoy  and
      Zhou, Yichao",
    booktitle = "Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies",
    month = jun,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/jlcl-multiple-ingestion/2021.naacl-main.445/",
    doi = "10.18653/v1/2021.naacl-main.445",
    pages = "5611--5620"
}