Evaluation of an English-Chinese Cross-Lingual Retrieval Experiment

K. L. Kwok

We conducted retrieval experiments using a collection of 170 MB Chinese text from TREC-5. The supplied queries (topics)are both English and Chinese, the latter to a large extent may be considered as very good translation of the former. Another set of Chinese queries were created by translating the English via a simple dictionary look-up procedure. Retrieval effectiveness for both types of queries were evaluated, essentially giving upper and lower bounds of how machine translation may contribute to this cross-lingual retrieval experiment. Results show that naive translation returns effectiveness about 30% to 50% worse than good translation.

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