基于优势关系下的协调近似空间

在基于优势关系下的信息系统中引入了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协调近似空间,这进一步方便了基于优势关系下不协调目标信息系统的研究,丰富了粗糙集理论.

Consistent Approximation Spaces Based on Dominance Relations

In practices, most of information systems are not only inconsistent, but also based on dominance relations be- cause of various factors. It is every difficult to acquire brief decision rules from inconsistent systems based on domi- nance relations. Furthermore, how to turn an inconsistent system into a consistent one is extremely meaningful. The main objective of this paper is to study the problem. The concept of consistent approximation space based on dominance relation is proposed in the paper, and it is shown that the inconsistent system can be turned into a consistent approxi- mation space based on dominance, and any knowledge isn't lost. Using this approaches some problems can be simpli- fied.