Group Sparse CNNs for Question Classification with Answer Sets Mingbo Ma author Liang Huang author Bing Xiang author Bowen Zhou author 2017-07 text Proceedings of the 55th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Regina Barzilay editor Min-Yen Kan editor Association for Computational Linguistics Vancouver, Canada conference publication ma-etal-2017-group 10.18653/v1/P17-2053 https://aclanthology.org/P17-2053/ 2017-07 335 340