作　　者： ; ; ;

机构地区： 重庆理工大学数学与统计学院

出　　处： 《模糊系统与数学》 2009年第6期155-161,共7页

摘　　要： 在基于优势关系下的不协调目标信息系统中引入了部分一致约简的概念,并得到了部分一致约简的判定定理以及辨识矩阵,建立了不协调目标信息系统的部分一致约简的具体方法,同时通过实例验证了该方法的有效性,从而为优势关系下信息系统的知识发现提供了理论基础。 Knowledge reduction is one of the most important problems in rough set theory. However, most of information systems are based on dominance relations because of various factors. To acquire brief decision rules from inconsistent systems based on dominance relations, knowledge reductions are needed. The main aim of this paper is to study the problem. The concept of partially consistent reduction is introduced in information systems based on dominance relations. And the judgment theorem and discernibility matrix are obtained, from which we can provide the approach to those reductions in inconsistent systems based on dominance relations. Finally, an example illustrates the validity of this method.

关 键 词： 粗糙集 信息系统 部分一致约简 辨识矩阵

领　　域： [自动化与计算机技术] [自动化与计算机技术]