Abstract
Abstract — Query translation is the most important component in Cross Language Information Retrieval systems using dictionary-based approach. In this paper, we present a method to build structured query in target language from a given query in source language. The method is based on constructing bi-lingual dictionaries, keyword extraction from source query, getting translation candidates for each keyword using mutual information and finally building structured query in target language. By combining several translations for each query term in target language, we overcome shortcomings of selecting only one translation and therefore improve system performance. Results for Vietnamese-English cross-lingual retrieval show improvements of building structured query over other methods using dictionary to produce query translation in target language by combining single selection translation for each keyword. Keywords — CLIR; dictionary-based; Vietnamese; keyword extraction; structured query; disambiguation; mutual information
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