@inproceedings{tsuboi-etal-2008-training,
    title = "Training Conditional Random Fields Using Incomplete Annotations",
    author = "Tsuboi, Yuta  and
      Kashima, Hisashi  and
      Mori, Shinsuke  and
      Oda, Hiroki  and
      Matsumoto, Yuji",
    editor = "Scott, Donia  and
      Uszkoreit, Hans",
    booktitle = "Proceedings of the 22nd International Conference on Computational Linguistics (Coling 2008)",
    month = aug,
    year = "2008",
    address = "Manchester, UK",
    publisher = "Coling 2008 Organizing Committee",
    url = "https://aclanthology.org/C08-1113/",
    pages = "897--904"
}