Query translation in Chinese-English cross-language information retrieval

Authors:
Yibo Zhang;Le Sun;Lin Du;Yufang Sun
Affiliations:
Institute of Software, Chinese Academy of Sciences, Beijing, P.R. China;Institute of Software, Chinese Academy of Sciences, Beijing, P.R. China;Institute of Software, Chinese Academy of Sciences, Beijing, P.R. China;Institute of Software, Chinese Academy of Sciences, Beijing, P.R. China
Venue:
EMNLP '00 Proceedings of the 2000 Joint SIGDAT conference on Empirical methods in natural language processing and very large corpora: held in conjunction with the 38th Annual Meeting of the Association for Computational Linguistics - Volume 13
Year:
2000

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Abstract

This paper proposed a new query translation method based on the mutual information matrices of terms in the Chinese and English corpora. Instead of looking up a bilingual phrase dictionary, the compositional phrase (the translation of phrase can be derived from the translation of its components) in the query can be indirectly translated via a general-purpose Chinese-English dictionary look-up procedure. A novel selection method for translations of query terms is also presented in detail. Our query translation method ultimately constructs an English query in which each query term has a weight. The evaluation results show that the retrieval performance achieved by our query translation method is about 73% of monolingual information retrieval and is about 28% higher than that of simple word-by-word translation way.