@inproceedings{masumura-etal-2015-hierarchical,
    title = "Hierarchical Latent Words Language Models for Robust Modeling to Out-Of Domain Tasks",
    author = "Masumura, Ryo  and
      Asami, Taichi  and
      Oba, Takanobu  and
      Masataki, Hirokazu  and
      Sakauchi, Sumitaka  and
      Ito, Akinori",
    editor = "M{\`a}rquez, Llu{\'i}s  and
      Callison-Burch, Chris  and
      Su, Jian",
    booktitle = "Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing",
    month = sep,
    year = "2015",
    address = "Lisbon, Portugal",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest_wac_2008/D15-1217/",
    doi = "10.18653/v1/D15-1217",
    pages = "1896--1901"
}