基于属性分类的悲观概念格与乐观概念格
高乐1,2, 王振1,2, 魏玲1,2, 祁建军3

Pessimistic Concept Lattices and Optimistic Concept Lattices Based on Attribute Classification
GAO Le1,2, WANG Zhen1,2, WEI Ling1,2, QI Jianjun3
例1的概念格 L ( U , A , I )