information retrieval, TREC-2002, query representation, question answering, reference
Library and Information Science
This paper describes the retrieval experiments for the main task and list task of the TREC-2002 question-answering track. The question answering system described automatically finds answers to questions in a large document collection. The system uses a two-stage retrieval approach to answer finding based on matching of named entities, linguistic patterns, keywords, and the use of a new inference module. In answering a question, the system carries out a detailed query analysis that produces a logical query representation, an indication of the question focus, and answer clue words.
Diekema, Anne R.; Chen, Jiangping; McCracken, Nancy; Ozgencil, Necati Ercan; and Taffet, Mary D., "Question Answering: CNLP at the TREC-2002 Question Answering Track" (2002). iSchool Faculty Scholarship. Paper 112.
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