Monolingual Experiments with Far-East Languages in NTCIR-6

This paper describes our third participation in an evaluation campaign involving the Chinese, Japanese and Korean languages (NTCIR-6). Our participation is motivated by three objectives: 1) study the retrieval performances of various probabilistic and language models for these languages; 2) compare the relative retrieval effectiveness of a combined “unigram & bigram” indexing scheme combined with an automatic wordsegmenting approach for Chinese and Japanese languages; and 3) evaluate the relative performance of the various data fusion strategies used to combine separate result lists in order to enhance retrieval effectiveness.