摘要
信息检索的研究重点是如何有效地获取某些信息,现阶段采用的信息检索技术主要基于布尔表达式、向量空间模型及概率模型。论文在介绍信息检索定义及基本原理的基础上,描述了这三种经典信息检索模型,并对这三种模型进行了简单比较。
How to effectively obtain some information is the important research of information retrieval. At present, the main technology of information retrieval is based on Boolean expression, Vector space model and Probability model. This paper gives the definition of information retrieval, describes these classical information retrieval models, and compares these models simply.
出处
《科技信息》
2009年第5期48-48,25,共2页
Science & Technology Information
关键词
信息检索
布尔
矢量模型
概率模型
Information retrieval
Boolean
Vector space model
Probability model
