摘要
将结构化技术用于变精度粗糙集模型,提出结构化变精度粗糙集模型,并通过φ算子对该模型进行刻画,研究其相关性质,给出该模型的近似精度与粗糙度的计算公式.最后通过实例分析,进一步表明新模型的特点和优势.
This paper applies the structuring technology to the variable precision rough set model,proposes a structured variable precision rough set model,the proposed model is characterized by operator φ and its properties are also explored in this paper,the approximate precision and roughness calculation formula of the model is given.Finally,the characteristics and advantages of the new model are demonstrated by an example.
作者
万仁霞
张海娣
苗夺谦
WAN Ren-xia;ZHANG Hai-di;MIAO Duo-qian(College of Mathematics and Information Science,North Minzu University,Yinchuan 750021,China;School of Electronics and Information Engineering,Tongji University,Shanghai 201804,China)
出处
《数学的实践与认识》
2021年第5期208-213,共6页
Mathematics in Practice and Theory
基金
国家自然科学基金(61662001)
宁夏重点实验室课题(2019KLBD006)。
关键词
粗糙集
变精度
近似
结构化
rough set
variable precision
approximation
structured
