CoCQA: Co-Training over Questions and Answers with an Application to Predicting Question Subjectivity Orientation Baoli Li author Yandong Liu author Eugene Agichtein author 2008-10 text Proceedings of the 2008 Conference on Empirical Methods in Natural Language Processing Mirella Lapata editor Hwee Tou Ng editor Association for Computational Linguistics Honolulu, Hawaii conference publication li-etal-2008-cocqa https://aclanthology.org/D08-1098/ 2008-10 937 946