宁夏大学学报（自然科学版）2024，Vol.45Issue(2)：107-111,5.
一种非对称距离下的粗糙粒结构选择方法
A Method for Selecting Rough Granular Structure Based on Asymmetric Distance
摘要
Abstract
Aiming at the selection of granular structures for approximate solutions in target information systems,a method for selecting rough granular structures based on asymmetric distance is proposed.Firstly,an asymmetric knowledge distance is defined to describe the closeness between conditional knowledge and the target concept within the knowledge distance framework of quotient space.Subsequently,asymmetric knowledge distance sequences are constructed according to different orders of adding conditional attributes in the same target information system.Furthermore,an evaluation parameter for rough granular structure is introduced under the constraint of attribute cost.Finally,the rough granular structure with smaller evaluation parameters is selected for step-by-step approximation.关键词
非对称距离/粗糙粒结构/属性代价/约束条件/评价参数Key words
asymmetric distance/rough granular structure/attribute cost/constraint condition/evaluation parameter分类
数理科学引用本文复制引用
陈志恩..一种非对称距离下的粗糙粒结构选择方法[J].宁夏大学学报（自然科学版）,2024,45(2):107-111,5.基金项目
国家自然科学基金资助项目(12261070) （12261070）
宁夏自然科学基金资助项目(2024A0714) （2024A0714）
宁夏高等学校科学研究基金资助项目(NGY2022083) （NGY2022083）
