Question answering systems aim to produce exact answers to users' questions instead of a list of related documents as used by current search engines. In this paper, we propose an ontology-based Vietnamese question answering system that allows users to express their questions in natural language. To the best of our knowledge, this is the first attempt to enable users to query an ontological knowledge base using Vietnamese natural language. Experiments of our system on an organizational ontology show promising results. © 2009 IEEE.

Nguyen D.Q., Nguyen D.Q., Pham S.B.

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Từ khóa : Knowledge base; NAtural language processing; Natural languages; Ontology-based; Question Answering; Question answering systems; Computational linguistics; Knowledge based systems; Knowledge engineering; Natural language processing systems; Search engines; Systems engineering; Ontology