@inproceedings{li-etal-2008-cocqa,
    title = "{C}o{CQA}: {C}o-{T}raining over Questions and Answers with an Application to Predicting Question Subjectivity Orientation",
    author = "Li, Baoli  and
      Liu, Yandong  and
      Agichtein, Eugene",
    editor = "Lapata, Mirella  and
      Ng, Hwee Tou",
    booktitle = "Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing",
    month = oct,
    year = "2008",
    address = "Honolulu, Hawaii",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/D08-1098/",
    pages = "937--946"
}