Implicit Feature Detection via a Constrained Topic Model and SVM Wei Wang author Hua Xu author Xiaoqiu Huang author 2013-10 text Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing David Yarowsky editor Timothy Baldwin editor Anna Korhonen editor Karen Livescu editor Steven Bethard editor Association for Computational Linguistics Seattle, Washington, USA conference publication wang-etal-2013-implicit https://aclanthology.org/D13-1092/ 2013-10 903 907