@inproceedings{liu-etal-2019-vocabulary,
    title = "Vocabulary Pyramid Network: Multi-Pass Encoding and Decoding with Multi-Level Vocabularies for Response Generation",
    author = "Liu, Cao  and
      He, Shizhu  and
      Liu, Kang  and
      Zhao, Jun",
    editor = "Korhonen, Anna  and
      Traum, David  and
      M{\`a}rquez, Llu{\'i}s",
    booktitle = "Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics",
    month = jul,
    year = "2019",
    address = "Florence, Italy",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/P19-1367/",
    doi = "10.18653/v1/P19-1367",
    pages = "3774--3783"
}