Download PDF by Ketty Georgieva Peeva, Yordan Kostadinov Kyosev: Fuzzy Relational Calculus: Theory, Applications And Software

By Ketty Georgieva Peeva, Yordan Kostadinov Kyosev

ISBN-10: 9812560769

ISBN-13: 9789812560766

ISBN-10: 9812701338

ISBN-13: 9789812701336

This e-book examines fuzzy relational calculus thought with purposes in quite a few engineering matters. The scope of the textual content covers unified and special tools with algorithms for direct and inverse challenge solution in fuzzy relational calculus. huge engineering purposes of fuzzy relation compositions and fuzzy linear structures (linear, relational and intuitionistic) are mentioned. a few examples of such purposes comprise ideas of equivalence, aid and minimization difficulties in fuzzy machines, development acceptance in fuzzy languages, optimization and inference engines in cloth and chemical engineering, and so on. A finished evaluate of the authors' unique paintings in fuzzy relational calculus is usually supplied in every one chapter.The hooked up CD-Rom includes a toolbox with many services for fuzzy calculations, including an unique set of rules for inverse challenge answer in MATLAB. This publication is additionally compatible to be used as a textbook in similar classes at complicated undergraduate and graduate degrees.

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Extra info for Fuzzy Relational Calculus: Theory, Applications And Software (Advances in Fuzzy Systems)

Example text

7) ii) Proof. =0. 2) for e operation is used. 6) we consider two subcases: a < b and a > b. 1. a a e 6 = 6 => a\/(aeb)=a\/b = b and the equality holds. 2. a > 6 => aeb = 0 =>• aV(ae6) = aV0 = a > 6 , the inequality holds. 6) we also consider two subcases: a > b and a < b. 30 Fuzzy Relational Calculus - Theory, Applications and Software 1. a>b => aeb = 0 => a A 0 = 0 < fe. 2. a a Ab = a b and a < b. 1. a>b => aVb = a => ae(a\/b)=aea = O

Direct Problem Resolution In this chapter fuzzy relations and membership matrices as well as operations with them are presented and their properties are studied. Attention is paid on direct problem resolution in fuzzy relational algebra for various compositions of fuzzy relations and on multiplications of membership matrices. Since fuzzy relations are special fuzzy sets (subsets of Cartesian product), all operations on fuzzy sets are applicable to fuzzy relations as well. We are most interested in operations on fuzzy relations that are not applicable to ordinary fuzzy sets, as for instance inverse and compositions.

1 ii). 2 Let R C X x Y and S C. Y x Z be composable fuzzy relations. Then the following inclusions are valid: i) R-h{Ro S) C S C R-^iR* S). ii) Se(RoS)-1 C R-1 C Sa(R»S)-1. Proof. 1 i), ii). 1 iii), iv). 2 Let R C X x Y and T C X x Z be fuzzy relations. Then: i) R» (R'1 aT)CT [Sanchez (1976)]. 38 Fuzzy Relational Calculus - Theory, Applications and Software ii) Ro(R-1eT) Hi) R»{R-laT) DT. C T C Ro (R~l eT). Proof. e. S = R»(R~1aT). (z, y)aT(x, z)) A L / (iJ(«, V) *T(t, z))\\ . R»(R-1aT)CT. ii) We denote by S C X x Z the composition Ro(R-1eT) = S.

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Fuzzy Relational Calculus: Theory, Applications And Software (Advances in Fuzzy Systems) by Ketty Georgieva Peeva, Yordan Kostadinov Kyosev

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