摘要
提出粗模糊集的θ-包含等价类的概念,给出变精度粗模糊集的一种新定义形式θ-粗模糊集,讨论了θ-粗模糊集的结构及其性质,证明了θ-粗模糊集的截集和模糊集截集的θ-粗集是等价的.
The conception of θ-inclusion equivalence class of rough fuzzy sets is proposed, a new definition form of variable precision rough fuzzy sets-θ- rough fuzzy sets is given, and the structure and property of θ-rough fuzzy sets are discussed. Lastly, the equivalence relation between the cut of θ-rough fuzzy sets and the θ- rough sets of the cut of fuzzy sets is proved.
出处
《山东大学学报（理学版）》
CAS
CSCD
北大核心
2006年第2期24-27,共4页
Journal of Shandong University(Natural Science)
基金
福建省自然科学基金资助项目(JA04268)
福建省教育厅基金资助项目(JA05326)
关键词
变精度粗模糊集
θ-包含等价类
θ-粗模糊集
近似精度
variable precision rough fuzzy sets
θ-inclusion equivalence class
θ-rough fuzzy sets
approximation precision
