Dublin City University at CLEF 2007: Cross-Language Speech Retrieval Experiments
Zhang, Ying and Jones, Gareth J.F. and Zhang, Ke (2008) Dublin City University at CLEF 2007: Cross-Language Speech Retrieval Experiments. In: CLEF 2007: Workshop on Cross Language Information Retrieval and Evaluation, 19-21 Sept. 2007, Budapest, Hungary.
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The Dublin City University participation in the CLEF 2007 CL-SR English task concentrated primarily on issues of topic translation. Our retrieval system used the BM25F model and pseudo relevance feedback. Topics were translated into English using the Yahoo! BabelFish free online service combined with domain-specific translation lexicons gathered automatically from Wikipedia. We explored alternative topic translation methods using these resources. Our results indicate that extending machine translation tools using automatically generated domainspecific translation lexicons can provide improved CLIR effectiveness for this task.
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