关键词: 动态模糊集, 双向S-粗糙模糊集, Dubois粗糙模糊集 , 模糊元素迁移

Abstract: Using the concept of fuzzy elementary transfers, a static fuzzy set was generalized to a dynamic fuzzy set, then a two-direction S-fuzzy set was obtained. Based on this, a two-direction S-rough fuzzy set was proposed, and its general structure was given. The relationships between a two-direction S-rough fuzzy set and Z.Pawlak rough sets, between a two-direction S-rough fuzzy set and a Dubois rough fuzzy set, between a two-direction S-rough fuzzy set and a two-direction S-rough set were analyzed. The application of the two-direction S-rough fuzzy set was given. A two-direction S-rough fuzzy set is a dynamic rough fuzzy set.

Key words: Dubois rough fuzzy set , fuzzy elementary transfers, two-direction S-rough fuzzy set, dynamic fuzzy set