智能信息检索扩展方法研究  

Research on the Expansion Method for Intelligent Information Retrieval

作　　者：陈晓金[1] 王兵[1] 

机构地区：[1]兰州交通大学图书馆,兰州730070

出　　处：《图书情报知识》2008年第4期83-86,共4页Documentation,Information & Knowledge

基　　金：甘肃省自然科学基金(3ZS051-A25-040);兰州交通大学学术带头人项目资助

摘　　要：本文针对信息检索在查询扩展方面的不足,提出了一种结合本体理论和用户相关反馈技术的查询扩展方法。以FirteX作为检索平台,选取WordNet作为本体扩展资源来验证本文所提出的查询扩展算法,实现结果表明该方法比基于余弦相似性的查询扩展方法在平均查全率、平均查准率方面有更大的优点。In this paper, a novel method for query expansion is presented in order to improve the performance of query expansion in information retrieval, which combines ontology theory with correlative user＇s feedback technology. Selected WordNet as ontology extension resources, the proposed method was verified on the retrieval platform of FirteX,. The experimental results show that it is superior to the method based on cosine similarity at the average search＇s recall ratio and the average search＇s precision ratio.

关 键 词：信息检索 查询扩展 知识表示 

分 类 号：G354[文化科学—情报学]