Question Analysis and Query Expansion in CS-CS IR4QA
Maofu Liu, Fang Fang, Qing Hu, Jianxun Chen · 2008
This paper describes our work in NTCIR-7 on the subtask of simplified Chinese monolingual information retrieval for question answering (CS-CS IR4QA). Based on the observation that inappropriate key terms and term mismatch often result in depressed precision and impressive recall, we employ a special question analysis method extracting more appropriate key terms and apply the query expansion technique gaining more relevant key terms, to enhance precision and efficiency for retrieval performance.