变精度多粒度粗糙集的信任结构  

The belief structure of variable precision multigranulation rough sets

作　　者：何丽琴 游小英 方连花 HE Liqin;YOU Xiaoying;FANG Lianhua(Institute of Information Engineering,Zhangzhou Institute of Technology,Zhangzhou,Fujian 363000,China;General Education Center,Quanzhou University of Information Engineerings,Quanzhou,Fujian 362000,China)

机构地区：[1]漳州职业技术学院信息工程学院,福建漳州363000 [2]泉州信息工程学院通识教育中心,福建泉州362000

出　　处：《闽南师范大学学报（自然科学版）》2021年第3期8-13,共6页Journal of Minnan Normal University：Natural Science

基　　金：福建省中青年教育科研项目(JAT200799)。

摘　　要：多粒度粗糙集是近年来粗糙集理论中的主要研究课题之一.本文介绍了变精度多粒度粗糙集模型的上、下近似算子;其次,借助划分函数把变精度多粒度粗糙集转化成单粒度粗糙集,构建了变精度多粒度粗糙集模型的信任结构,并生成相应的信任函数与似然函数,这些结果有利于完善变精度多粒度粗糙集的数值属性约简理论.Multigranulation rough set is one of the importantissues in rough set theory in recent years.The upper and lower approximation operators of variable-precision multigranulation rough set model are introduced.The belief structure of the model is constructed,and the belief function and plausibility function of the model are constructed according to the upper and lower approximation operators of the model.These results are helpful to improve the developement of attribute reduction of variable precision multigranularity rough sets.

关 键 词：多粒度 变精度粗糙集 信任函数 似然函数 

分 类 号：TP182[自动化与计算机技术—控制理论与控制工程]