基于本体和用户相关反馈的扩展查询研究  

Query expansion based on user relevance feedback and ontology

作　　者：王旭阳[1] 

机构地区：[1]兰州理工大学计算机与通信学院,兰州730050

出　　处：《计算机应用》2008年第11期2958-2960,共3页journal of Computer Applications

摘　　要：描述了一种扩展查询(QE)的新方法,这是一种连接用户相关反馈和本体的混合扩展查询技术,有两大贡献:一是连接了用户相关反馈和本体技术,二是采用F irteX作为实验平台。与目前广泛应用的基于余弦相似性的扩展查询技术相比,实验结果表明方法平均精度达到15%,高于基于余弦相似性的扩展查询技术的13%,并且将平均反馈率提高到了16%。A novel method for Query Expansion （QE） was presented in this paper. The proposed method was a hybrid QE technology that combined user relevance feedback and ontology. The proposed method had two significant novelties it combined user relevance feedback with ontology and used FirteX as the experimental platform. The proposed method was compared with cosine similarity-based QE that was a widely used query expansion technique. The experimental results show that the proposed method outperforms cosine similarity-based QE 15% and 13% in terms of average precision and average recall and has an improvement of 16% in F-measure.

关 键 词：信息检索 扩展查询 用户相关反馈 本体 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]