Summary
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A Definitional Question Answering System Based on Phrase Extraction Using Syntactic Patterns Kyoung-Soo HAN Young-In SONG Sang-Bum KIM Hae-Chang RIM Publication IEICE TRANSACTIONS on Information and Systems Vol.E89-D No.4 pp.1601-1605 Publication Date: 2006/04/01 Online ISSN: 1745-1361 DOI: 10.1093/ietisy/e89-d.4.1601 Print ISSN: 0916-8532 Type of Manuscript: LETTER Category: Natural Language Processing Keyword: definitional question answering, phrase extraction, Full Text: PDF(152.2KB)>>
Summary: We propose a definitional question answering system that extracts phrases using syntactic patterns which are easily constructed manually and can reduce the coverage problem. Experimental results show that our phrase extraction system outperforms a sentence extraction system, especially for selecting concise answers, in terms of recall and precision, and indicate that the proper text unit of answer candidates and the final answer has a significant effect on the system performance. | ||||||||||
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