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A New Question Answering System for Chinese Restricted Domain Haiqing HU Peilin JIANG Fuji REN Shingo KUROIWA Publication IEICE TRANSACTIONS on Information and Systems Vol.E89-D No.6 pp.1848-1859 Publication Date: 2006/06/01 Online ISSN: 1745-1361 DOI: 10.1093/ietisy/e89-d.6.1848 Print ISSN: 0916-8532 Type of Manuscript: Special Section PAPER (Special Section on Human Communication II) Category: Language Keyword: question answering system, Web-based, semantic similarity, restricted domain, Chinese, Full Text: PDF(672.4KB)>>
Summary: In this paper, we propose the construction of a web-based Question Answering (QA) system for restricted domain, which combines three resource information databases for the retrieval mechanism, including a Question&Answer database, a special domain documents database and the web resource retrieved by Google search engine. We describe a new retrieval technique of integrating a probabilistic technique based on OkapiBM25 and a semantic analysis which based on the ontology of HowNet knowledge base and a special domain HowNet created for the restricted domain. Furthermore, we provide a method of question expansion by computing word semantic similarity. The system is first developed for a middle-size domain of sightseeing information. The experiments proved the efficiency of our method for restricted domain and it is feasible to transfer to other domains expediently using the proposed method. | ||||||||||
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