《山东大学学报(理学版)》 ›› 2021, Vol. 56 ›› Issue (1): 68-74.

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### 基于依赖空间的F-C变精度概念格

1. 长安大学理学院, 陕西 西安 710064
• 发布日期:2021-01-05
• 作者简介:张静(1996— ),女,硕士研究生,研究方向为粗糙集与概念格. E-mail:jiing_z@126.com*通信作者简介:马建敏(1978— ),女,博士,教授,研究方向为粗糙集、概念格与粒计算. E-mail:cjm-zm@126.com
• 基金资助:
国家自然科学基金资助项目(61772019,61603278,71701021)

### F-C variable threshold concept lattices based on dependence spaces

ZHANG Jing, MA Jian-min*

1. School of Science, Changan University, Xian 710064, Shaanxi, China
• Published:2021-01-05

Abstract: 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.

• TP18
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