基于优势关系下的协调近似空间(续)  

Consistent Approximation Spaces Based on Dominance Relations (Ⅱ)

作　　者：徐伟华[1] 张晓燕[2] 苏雅娟[1] 张文修[1] 

机构地区：[1]西安交通大学理学院信息与系统科学研究所,西安710049 [2]广东海洋大学理学院数学与信息科学系,湛江524088

出　　处：《计算机科学》2007年第3期148-150,共3页Computer Science

基　　金：国家"九七三"计划项目资助(项目号:2002CB31200)。

摘　　要：在基于优势关系下的不协调目标信息系统中引入了分布和最大分布协调近似空间的概念,并证明了在优势关系下不协调目标信息系统也可以转化为一个分布以及最大分布协调近似空间,这更加方便了基于优势关系下不协调目标信息系统的研究,从而进一步丰富了粗糙集理论。In real-world, most of information systems are not only inconsistent, but also based on dominance relations because of various factors. Moreover, it is extremely important to turn an inconsistent system into a consistent one. The main aim of this paper is to discuss the problem. The concepts of approximation space of distribution consistent are proposed based on dominance relation in the paper, and it is shown that the inconsistent system can be turned into a distribution consistent approximation space, and any knowledge isn＇t lost. Using this approach some problems can be simplified.

关 键 词：粗糙集 信息系统 分布约简 最大分布约简 协调近似空间 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]