@inproceedings{he-etal-2009-multi,
    title = "Multi-Task Learning in Conditional Random Fields for Chunking in Shallow Semantic Parsing",
    author = "He, Saike  and
      Wang, Xiaojie  and
      Dong, Yuan  and
      Zhang, Taozheng  and
      Bai, Xue",
    editor = "Kwong, Olivia",
    booktitle = "Proceedings of the 23rd Pacific Asia Conference on Language, Information and Computation, Volume 1",
    month = dec,
    year = "2009",
    address = "Hong Kong",
    publisher = "City University of Hong Kong",
    url = "https://aclanthology.org/Y09-1020/",
    pages = "180--189"
}