集成检索系统中资源选择技术及算法

Resource Selection in Integrated Retrieval Systems and Its Algorithms

介绍近年来出现的主要资源选择技术的基本思想及算法,包括基于资源相关度排序的资源选择技术、基于文献分布状况的资源选择技术、基于检索成本计算的资源选择技术和基于资源内容等级结构的资源选择技术,并对目前的资源选择技术进行分析和评价。

Integrated information retrieval system is an important form of Web integration system. Resource selection is one of key technologies in the integrated information retrieval system. The paper introduces the main ideas and algorithms of the four main resource selection technologies available, which are technologies based on resource relevent ranking, relevant document distribution, retrieval cost estimate and databases hierarchical structure, respectively. Then it introduces typical algorithms of each technology, in addition, it analyzes and evaluates resource selection technologies nowadays.