关键词: 粗糙集, 随机变量, 属性约简

Abstract: Reduction of attributes is one of the important topics in the research of rough set theory. In this paper, the concept of fuzzy random information system is introduced, where object can take fuzzy random variable as its attribute value. Furthermore, dependent-expectation relation is defined. Based on dependent-expectation relation the problem of attribute reduction and judgment in fuzzy random information system are studied. Finally, by an example, calculation steps of appropriate method is showed.

Key words: rough set, random variable, attribute reduction