基于向量空间的信息检索系统的评价方法

Study on measure method of vector space information retrieval system

针对基于向量空间的信息检索系统给出了两种计算方法:基于文献——关键词矩阵和文献查询——评价者矩阵的计算方法.查全率和查准率在衡量基于向量空间的信息检索系统时,存在不足之处,根据基于向量空间的信息检索系统输出的检索结果的特点,提出了一种新的评价方法:偏移距离法.

In this paper, two new methods that can calculate the recall and precision of the vector space information retrieval system is presented. Uses document keyword matrix or document assessor matrix to calculate the recall and precision . As the recall and precision have intrinsic defect to assess the vector space information retrieval system, puts forward the offset distance method to assess the vector space information retrieval system.