Chinese Information Retrieval Based on Related Term Group
Tingting He, Guozhong Qu, Xinhui Tu, Donghong Ji · 2005
This paper describes our work at the fifth NTCIR workshop on the subtasks of monolingual information retrieval (IR). Query expansions using automatically acquired related term groups were explored. Unlike traditional query expansion methods, the related term groups extracted from web-based corpuses and the related terms extracted from document set are used in combination to improve the effectiveness of query expansion in our method. Experiments show that our method achieves an average 13.1 % improvement compare to the traditional relevance feedback technique.