一种面向主题的关键词查询扩展方法

AN APPROACH FOR TOPIC-ORIENTED KEYWORD QUERY EXPANSION

提出一种基于局部统计和语义扩展相结合,面向主题的关键词查询扩展方法。该方法通过对给定主题的初始关键词搜索反馈网页进行分析,采用TF*PSF语义加权方法计算主题候选词的权重来进一步筛选主题关键词。在此基础上,设计了面向Web的主题关键词迭代查询扩展算法,采用主题关键词的组合查询策略,迭代扩展出主题的关键词集合。实验证明该方法是有效的。

In this paper we propose a novel topic-oriented Keyword query expansion approach,which is based on the combination of local statistics and semantic expansion.It searches those feedback pages for analysis through initial keyword of the given topics,and then calculates the weight of candidate Key words of the topic using the TF＊PSF semantic weighting algorithm for further sieving those topic Key words.Based on that,a Web-oriented topic keyword iterative query expansion algorithm is designed,which gradually iterates and expands the keyword set by adopting keyword combination strategy.Experiments prove that this method is effective.