Question Answering Using Integrated Information Retrieval and Information Extraction.

Barry Schiffman Kathleen McKeown Ralph Grishman James Allan Question Answering Using Integrated Information Retrieval and Information Extraction. 532-539 2007 HLT-NAACL http://www.aclweb.org/anthology/N07-1067 conf/naacl/2007 db/conf/naacl/naacl2007.html#SchiffmanMGA07