Function-Based Question Classification for General QA Fan Bu author Xingwei Zhu author Yu Hao author Xiaoyan Zhu author 2010-10 text Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing Hang Li editor Lluís Màrquez editor Association for Computational Linguistics Cambridge, MA conference publication bu-etal-2010-function https://aclanthology.org/D10-1109/ 2010-10 1119 1128