LCC-DCU C-C question answering task at NTCIR-5
Wang, Bin and Jones, Gareth J.F. (2005) LCC-DCU C-C question answering task at NTCIR-5. In: the Fifth NTCIR Workshop on Research in Information Access Technologies - Information Retrieval, Question Answering and Cross-Lingual Information Access , 6-9 Dec 2005, Tokyo, Japan.
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This paper describes the work for our participation in the NTCIR-5 Chinese to Chinese Question Answering task. Our strategy is based on the “Retrieval plus Extraction” approach. We first retrieve relevant documents, then retrieve short passages from the above documents, and finally extract named entity answers from the most relevant passages. For question type identification, we use simple heuristic rules which can cover most questions. The Lemur toolkit with the OKAPI model is used for document retrieval. Results of our task submission are given and some preliminary conclusions drawn.
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