POSTECH at NTCIR-6: Combining Evidences of Multiple Term Extractions for Mono-lingual and Cross-lingual Retrieval in Korean and Japanese

Seung-Hoon Na, Jungi Kim, Yeha Lee, Jong-Hyeok Lee
2007 NTCIR Conference on Evaluation of Information Access Technologies  
This paper describes our methodologies for NTCIR-6 CLIR involving Korean and Japanese, and reports the official result for Stage 1 and Stage 2. We participated in three tracks: K-K and J-J monolingual tracks and J-K cross-lingual tracks. As in the previous year, we focus on handling segmentation ambiguities in Asian languages. As a result, we prepared multiple term representations for documents and queries, of which ranked results are merged to generate final ranking. From official results, our
more » ... methodology in Korean won the top in 6 subtasks of total 9 subtasks for Stage 2,and won the top in 2 subtasks of total 3 subtasks for Stage 1. Even though our system is the same as the previous one, final performances from NTCIR-3 to NTCIR-5 are further improved over our previous results by slightly modifying the feedback parameters.
dblp:conf/ntcir/NaKLL07 fatcat:cgjyhp7na5h65engfpifpndhg4