基于依赖空间的F-C变精度概念格  

F-C variable threshold concept lattices based on dependence spaces

作　　者：张静 马建敏[1] ZHANG Jing;MA Jian-min(School of Science,Chang'an University,Xian 710064,Shaanxi,China)

机构地区：[1]长安大学理学院,陕西西安710064

出　　处：《山东大学学报（理学版）》2021年第1期68-74,共7页Journal of Shandong University(Natural Science)

基　　金：国家自然科学基金资助项目(61772019,61603278,71701021)。

摘　　要：在模糊形式背景中,首先基于变精度算子定义属性幂集上的一致关系,引入依赖空间;根据一致关系构造闭包算子,研究闭包算子与变精度概念之间的关系;进一步通过研究闭包算子的不动点和变精度概念的内涵之间的关系,给出变精度概念格的构造算法;最后通过实验验证本文方法的可行性。For a fuzzy formal context,a congruence relation is defined based on a variable precision operator on the power set of attributes.A congruence relation is obtained.Based on it,a dependence space is shown.By constructing a closure operator according to the congruence relation,the relationships between the closure operator and the variable precision concepts are discussed.Furthermore,applying the properties of the closure operator,we get that any fixed point of the closure operator is exactly the intension of some variable precision concept.Based on these,an algorithm to construct all variable precision concepts is obtained.Experiments are used to verify the feasibility of the proposed method.

关 键 词：模糊形式背景 依赖空间 一致关系 闭包算子 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]