Collective Opinion Target Extraction in Chinese Microblogs Xinjie Zhou author Xiaojun Wan author Jianguo Xiao 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 zhou-etal-2013-collective https://aclanthology.org/D13-1189/ 2013-10 1840 1850