RICOH at NTCIR-2
نویسندگان
چکیده
At NTCIR-2, RICOH submitted eight runs for the Japanese IR task. Of the eight runs, four runs use the title eld only and the other four use the description eld only. RICOH's system is built on our English text retrieval system and augmented to handle Japanese text. The system features (1) hybrid retrieval using a combination of n-gram indexing and wordbased document ranking; (2) word-based and ngram-based query expansion; (3) a modi ed version of the Okapi's probabilistic model.
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تاریخ انتشار 2001