Question Analysis and Answer Passage Retrieval for Opinion Question Answering Systems Lun-Wei Ku author Yu-Ting Liang author Hsin-Hsi Chen author 2008-09 text International Journal of Computational Linguistics & Chinese Language Processing, Volume 13, Number 3, September 2008: Special Issue on Selected Papers from ROCLING XIX conference publication ku-etal-2008-question https://aclanthology.org/O08-5003/ 2008-09 307 326