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Rough communication of crisp concept in fuzzy approximation spaces 被引量:3
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作者 Wang Hongkai Guan Yanyong Yu Zhaoxia 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2009年第2期327-331,共5页
To study the problem of knowledge translation in fuzzy approximation spaces, the concept of rough communication of crisp set in fuzzy approximation spaces is proposed. In a rough communication of crisp set in fuzzy ap... To study the problem of knowledge translation in fuzzy approximation spaces, the concept of rough communication of crisp set in fuzzy approximation spaces is proposed. In a rough communication of crisp set in fuzzy approximation spaces, the problem of uncertainty exists, for each agent has a different language and cannot provide precise communication to each other. By means of some concepts, such as CF rough communication cut, which is a bridge between fuzzy concept and crisp concept, cut analysis of CF rough communication is made, and the relation theorem between CF rough communication and rough communication of crisp concept is obtained. Finally, in order to give an intuitive analysis of the relation between CF rough communication and rough communication of crisp concept, an example is given. 展开更多
关键词 rough sets fuzzy approximation space crisp concept rough communication CF rough communication cut
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Fuzzy rough sets in Sostak sense
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作者 Ismail Ibedou S.E.Abbas 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2022年第4期563-582,共20页
In this paper,we defined the fuzzy operator Φ_(λ) in a fuzzy ideal approximation space(X,R,I)associated with a fuzzy rough set λ in Sostak sense.Associated with Φ_(λ),there are fuzzy ideal interior and closure op... In this paper,we defined the fuzzy operator Φ_(λ) in a fuzzy ideal approximation space(X,R,I)associated with a fuzzy rough set λ in Sostak sense.Associated with Φ_(λ),there are fuzzy ideal interior and closure operators int_(Φ)^(λ) and cl_(Φ)^(λ),respectively.r-fuzzy separation axioms,r-fuzzy connectedness and r-fuzzy compactness in fuzzy ideal approximation spaces are defined and compared with the relative notions in r-fuzzy approximation spaces.There are many differences when studying these notions related with a fuzzy ideal different from studying these notions in usual fuzzy approximation spaces.Lastly,using a fuzzy grill,we will get the same results given during the context. 展开更多
关键词 fuzzy rough set fuzzy approximation space fuzzy ideal approximation space r-fuzzy separation axioms r-fuzzy connectedness r-fuzzy compactness
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