异构信息集成中的视图构建方法研究

An Research on the Conceived Methods of the Isomer Intergated Information

“信息集成”是当前信息领域研究热点之一。本文首先分析了信息集成的体系结构,然后给出了一种采用Datalog规则描述视图定义的方法,并以AT&T实验室的InformationManifold系统和Stanford大学的Tsimmis系统为例,从视图构建的角度,将信息集成分为两类:“自顶向下”的方法和“自底向上”的方法,分析了各自构建的步骤与难点,最后对视图集成的方法做一讨论。

Intergated Information″is one of the hotsports in computer research.This paper analyzes the systemic framework of the intergated information and puts forward a method to describe the view define used the Datalog rule.With the example of the information Manifold system in AT&T lab and the example of tsimmis system in tanford University.At last this paper puts the information into two kinds and analyzes its process and difficulty.