Overview of CLIR Task at the Fourth NTCIR Workshop
نویسندگان
چکیده
The purpose of this paper is to overview researchefforts at the NTCIR-4 CLIR task, which is a projectof large-scale retrieval experiments on cross-lingualinformation retrieval (CLIR) of Chinese, Japanese,Korean, and English. The project has four sub-tasks,multi-lingual IR (MLIR), bilingual IR (BLIR), pivotbilingual IR (PLIR) and single language IR (SLIR), inwhich many research groups from over ten countriesare participating. This paper describes the system ofthe NTCIR-4 CLIR task and its test collection (docu-ment sets, topic sets, and method for relevance judg-ments), and reviews CLIR techniques used by par-ticipants and search performance of runs submittedfor evaluation.
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