变精度与程度“逻辑或”多粒度粗糙集  

Logical disjunct operation of variable precision and grade multi-granulation rough set

作　　者：汪小燕 郭云婷 申元霞 WANG Xiaoyan;GUO Yunting;SHEN Yuanxia(School of Computer Science and Technology,Anhui University of Technology,Ma’anshan 243032,China)

机构地区：[1]安徽工业大学计算机科学与技术学院

出　　处：《苏州科技大学学报（自然科学版）》2019年第2期71-77,共7页Journal of Suzhou University of Science and Technology（Natural Science Edition）

基　　金：国家青年科学基金资助项目(61806004);安徽省自然科学基金资助项目(1808085MF196);研究生创新研究基金资助项目(2017217)

摘　　要：在多粒度粗糙集模型基础上,考虑相对误差和绝对误差的分类思想,针对不完备信息系统提出基于限制容差关系的变精度与程度“逻辑或”多粒度粗糙集,包括变精度与程度“逻辑或”乐观和悲观多粒度粗糙集。讨论变精度与程度“逻辑或”乐观和悲观多粒度粗糙集的相关性质,通过实验验证该模型的有效性。On the basis of multi-granulation rough set model,taking into consideration the classification of relative error and absolute error,we proposed a logical disjunct operation of variable precision and grade multi-granulation rough set involving limited tolerance relation for incomplete information systems,which includes the logical disjunct operation of variable precision and grade optimistic and pessimistic multi-granulation rough sets. The properties of the proposed models are discussed,and the effectiveness of the models is verified by experiments.

关 键 词：不完备信息系统 限制容差关系 多粒度粗糙集 逻辑或 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]