Systematic study on query expansion

Authors:
Yue Li;Xing Li;Jingfang Xu
Affiliations:
Department of Electronic Engineering, Tsinghua University, Beijing, P.R. China;Department of Electronic Engineering, Tsinghua University, Beijing, P.R. China;Department of Electronic Engineering, Tsinghua University, Beijing, P.R. China
Venue:
ASIAN'05 Proceedings of the 10th Asian Computing Science conference on Advances in computer science: data management on the web
Year:
2005

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Abstract

Although query expansion (QE) has been extensively studied to provide more specific and accurate information for user query, little has been explored to study the importance of combined solution which includes extract terms, select terms correlation, and weight terms correl- ation for QE. The experimental results, based on two real Chinese query logs with 8-14 millions queries, show that the precision varies from 10% to 90% of the top 5 expansion terms.