Social and Behavioral Sciences Commons^™

Question Answering: Cnlp At The Trec-2002 Question Answering Track, Anne R. Diekema, Jiangping Chen, Nancy Mccracken, Necati Ercan Ozgencil, Mary D. Taffet

School of Information Studies - Faculty Scholarship

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.