基于加权特性关系的扩展粗糙集模型  

Extended rough set model based on weighted characteristic relation

作　　者：邱光辉[1] 唐定勇[1] 

机构地区：[1]中国工程物理研究院计算机应用研究所,四川绵阳621900

出　　处：《计算机工程与应用》2016年第23期98-101,共4页Computer Engineering and Applications

基　　金：国家自然科学基金联合项目(No.U1230117)

摘　　要：综合考虑不完备信息系统中信息缺失的不同情况及属性本身的重要性,提出了加权特性关系,给出了基于加权特性关系的扩展粗糙集模型及其近似集的定义和性质,并用实际例子解释了该扩展粗糙集模型的近似集计算方法。Considering data missing in the incomplete information system and the importance of the attributes, the weighted characteristic relation is proposed. Then, an extended rough set model under the weighted characteristic relation and the definitions of its lower and upper approximations and their properties are given. Finally an example is used to illustrate the method of calculating approximations in this extended rough set model.

关 键 词：不完备信息系统 粗糙集 近似集 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]