基于词序的多关键词加权检索融合研究

Study on Multi-keywords Weighted Retrieval and Fusion Based on Words Order

分析国内外目前报道的三种元搜索多关键词加权方法,指出这些方法存在忽视词序的问题;进而提出结合词序特征的多关键词综合加权方法,对多关键词加权方法做重要改进;此外研究基于D-S理论的元搜索结果融合方法;实验表明,该方法可以明显提高检索性能。

This paper analyzes three kinds of multi - keywords weighted metasearching methods which are reported at home and abroad, points out the problem of neglecting the words order which exists in previous methods. This study puts forward multi - keywords synthesizing weighted method which combines the words order feature, and improves the current methods. The paper also studies the results fusion based on the D - S theory. The experiment indicates that the method pro- posed in this paper can improve retrieval performance obviously.