Response Generation Based on Hierarchical Semantic Structure with POMDP Re-ranking for Conversational Dialogue Systems Jui-Feng Yeh author Yuan-Cheng Chu author 2013-10 text Proceedings of the Seventh SIGHAN Workshop on Chinese Language Processing Liang-Chih Yu editor Yuen-Hsien Tseng editor Jingbo Zhu editor Fuji Ren editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication yeh-chu-2013-response https://aclanthology.org/W13-4405/ 2013-10 29 34