[1]罗来鹏,范自柱.粗糙集中几种粒结构的代数关系[J].华侨大学学报(自然科学版),2019,40(5):694-700.[doi:10.11830/ISSN.1000-5013.201812041]
　LUO Laipeng,FAN Zizhu.Algebraic Relation of Several Granular Structures in Rough Sets[J].Journal of Huaqiao University(Natural Science),2019,40(5):694-700.[doi:10.11830/ISSN.1000-5013.201812041]
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粗糙集中几种粒结构的代数关系()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第40卷
期数:
2019年第5期
页码:
694-700
栏目:
出版日期:
2019-09-20

文章信息/Info

Title:
Algebraic Relation of Several Granular Structures in Rough Sets
文章编号:
1000-5013(2019)05-0694-07
作者:
罗来鹏;  范自柱
华东交通大学 理学院, 江西 南昌 330013
Author(s):
LUO Laipeng;  FAN Zizhu
School of Sciences, East China Jiaotong University, Nanchang 330013, China
关键词:
粒计算;  粗糙集;  属性约简;  包含度;  变精度粗糙集;  最优近似;  相似度
Keywords:
granular computing;  rough set;  attribute reduction;  inclusion degree;  variable precision rough set;  optimal approximation;  similarity degree
分类号:
TP18
DOI:
10.11830/ISSN.1000-5013.201812041
文献标志码:
A
摘要:
针对目标概念在近似空间上存在多种粒结构的问题,通过讨论目标概念的最优近似集与Pawlak近似集、变精度近似集之间的代数关系,得到最优近似集与Pawlak下、上近似集、变精度下、上近似集的等价条件;通过分析基于最优近似、基于Pawlak近似、基于变精度近似的分布约简之间的关系,得到在一定条件下,最优近似分布约简为Pawlak近似与变精度近似的分布约简.研究结果表明:根据目标概念与基本知识粒之间不同的近似刻画,不仅可以建立不同的粗糙集模型,还可以建立不同的分布约简.
Abstract:
To the problem of existing many kinds of granular structures on approximation space, the algebraic relations among the optimal approximation set, Pawlak lower and upper approximation set and the variable precision lower and upper approximation set of the target concept are discussed. The equivalent conditions of the optimal approximation set between Pawlak approximation set, the variable precision approximation set are obtained. The relationships among the distribution reduction based on the optimal approximation, the distribution reduction based on the Pawlak approximation and the distribution reduction based on the variable precision approximation are analyzed. Under certain conditions, the conclusions that the optimal approximate distribution reduction is Pawlak approximation and variable precision approximation distribution reduction are presented. It can be seen from these above conclusions that the different rough set models can not only be established, but also different distribution reduction can be established according to the different approximate characterization between the target concept and the basic granular.

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备注/Memo

备注/Memo:
收稿日期: 2018-12-19
通信作者: 罗来鹏(1973-),男,副教授,主要从事粗糙集与粒计算等研究.E-mail:luolp789@163.com.
基金项目: 国家自然科学基金资助项目(61472138)
更新日期/Last Update: 2019-09-20