摘要
将Nishino粗糙集引入到形式概念分析理论中,构造三支近似算子,提出了面向对象的三支近似概念,并基于参数β的不同阈值,对所提出概念中的上下近似的性质进行讨论。最后,结合实例验证三支近似概念的有效性和合理性。
In this paper,Nishino rough set is introduced into formal concept analysis,and three-way approximation operators are constructed,and then object-oriented three-way approximation concept is proposed.Based on different thresholds of parameterβ,the properties of upper and lower approximation in the proposed concept are discussed.Finally,the validity and rationality of the three-way approximation concept are verified by examples.
作者
李梅
万仁霞
LI Mei;WAN Renxia(School of Mathematics and Information Science,North Minzu University,Yinchuan,Ningxia 75002l,China)
出处
《闽江学院学报》
2022年第5期18-25,共8页
Journal of Minjiang University
基金
国家自然科学基金(61662001)
中央高校基本科研业务费专项资金(FWNX04)
宁夏自然科学基金(2021AAC03203)。
关键词
变精度粗糙集
Nishino粗糙集
三支概念格
近似
variable precision rough set
Nishino rough set
three-way concept lattice
approximation
