TREC-2 Proceedings of the second conference on Text retrieval conference
Querying across languages: a dictionary-based approach to multilingual information retrieval
SIGIR '96 Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval
Resolving ambiguity for cross-language retrieval
Proceedings of the 21st annual international ACM SIGIR conference on Research and development in information retrieval
A context vector model for information retrieval
Journal of the American Society for Information Science and Technology
A Statistical View on Bilingual Lexicon Extraction: From Parallel Corpora to Non-parallel Corpora
AMTA '98 Proceedings of the Third Conference of the Association for Machine Translation in the Americas on Machine Translation and the Information Soup
Dictionary Methods for Cross-Lingual Information Retrieval
DEXA '96 Proceedings of the 7th International Conference on Database and Expert Systems Applications
Applying query structuring in cross-language retrieval
Information Processing and Management: an International Journal
Automatic transliteration for Japanese-to-English text retrieval
Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval
Computational Linguistics
An IR approach for translating new words from nonparallel, comparable texts
COLING '98 Proceedings of the 17th international conference on Computational linguistics - Volume 1
Building an MT dictionary from parallel texts based on linguistic and statistical information
COLING '94 Proceedings of the 15th conference on Computational linguistics - Volume 1
Using the web for automated translation extraction in cross-language information retrieval
Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval
Mining the Web to Create a Language Model for Mapping between English Names and Phrases and Japanese
WI '04 Proceedings of the 2004 IEEE/WIC/ACM International Conference on Web Intelligence
ACM Transactions on Asian Language Information Processing (TALIP)
ACL '04 Proceedings of the 42nd Annual Meeting on Association for Computational Linguistics
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For cross-language text retrieval systems that rely on bilingual dictionaries for bridging the language gap between the source query language and the target document language, good bilingual dictionary coverage is imperative. For terms with missing translations, most systems employ some approaches for expanding the existing translation dictionaries. In this paper, instead of lexicon expansion, we explore whether using the context of the unknown terms can help mitigate the loss of meaning due to missing translation. Our approaches consist of two steps: (1) to identify terms that are closely associated with the unknown source language terms as context vectors and (2) to use the translations of the associated terms in the context vectors as the surrogate translations of the unknown terms. We describe a query-independent version and a query-dependent version using such monolingual context vectors. These methods are evaluated in Japanese-to-English retrieval using the NTCIR-3 topics and data sets. Empirical results show that both methods improved CLIR performance for short and medium-length queries and that the query-dependent context vectors performed better than the query-independent versions.