属性粗糙集的新型近似算子  

A New Approximation Operator of Attribute Rough Sets

作　　者：陈宝凤[1] 付国华[1] 田彦伟[2] 

机构地区：[1]安阳工学院数理学院,河南安阳45500 [2]安阳师范学院数学与统计学院,河南安阳455000

出　　处：《数学的实践与认识》2017年第8期222-227,共6页Mathematics in Practice and Theory

摘　　要：由等价类中元素属性测度的上、下确界定义的属性粗糙集,没有充分反映等价类中其它元素的作用,在信息处理中不免造成元素信息的丢失.为此提出一种新的属性粗糙集近似算子的表示方法,给出了相应的性质并实例说明了这一方法的合理性.Attribute rough sets is defined by the element attribute measure＇infimum or supremum in equivalent class. As a result of not considering the elements whose attribute measure are between the minimum and maximum, some useful information of these elements may be lost in the information processing. This paper presents a new operator of attribute rough sets, point out several related properties. At last, an example proves that the measures are rationality.

关 键 词：属性粗糙集 属性测度 近似算子 上、下确界 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]