Question Analysis and Answer Passage Retrieval for Opinion Question Answering Systems Lun-Wei Ku author Yu-Ting Liang author Hsin-Hsi Chen author 2007-09 text Proceedings of the 19th Conference on Computational Linguistics and Speech Processing Kuang-Hua Chen editor Berlin Chen editor The Association for Computational Linguistics and Chinese Language Processing (ACLCLP) Taipei, Taiwan conference publication ku-etal-2007-question https://aclanthology.org/O07-1013/ 2007-09 177 189