Download Advances in Fuzzy Implication Functions by Sebastià Massanet, Joan Torrens (auth.), Michał Baczyński, PDF

By Sebastià Massanet, Joan Torrens (auth.), Michał Baczyński, Gleb Beliakov, Humberto Bustince Sola, Ana Pradera (eds.)

Fuzzy implication capabilities are one of many major operations in fuzzy good judgment. They generalize the classical implication, which takes values within the set {0,1}, to fuzzy good judgment, the place the reality values belong to the unit period [0,1]. those features aren't in basic terms basic for fuzzy common sense platforms, fuzzy regulate, approximate reasoning and professional structures, yet in addition they play an important position in mathematical fuzzy good judgment, in fuzzy mathematical morphology and photograph processing, in defining fuzzy subsethood measures and in fixing fuzzy relational equations.

This quantity collects eight learn papers on fuzzy implication functions.

Three articles concentrate on the development equipment, on alternative ways of producing new sessions and at the universal homes of implications and their dependencies. articles speak about implications outlined on lattices, particularly implication features in interval-valued fuzzy set theories. One paper summarizes the adequate and worthwhile stipulations of suggestions for one distributivity equation of implication. the subsequent paper analyzes compositions in accordance with a binary operation * and discusses the dependencies among the algebraic houses of this operation and the prompted sup-* composition. The final article discusses a few open difficulties with regards to fuzzy implications, that have both been thoroughly solved or these for which partial solutions are recognized. those papers goal to provide today’s state of the art during this area.

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Extra info for Advances in Fuzzy Implication Functions

Example text

14), I N satisfies EP and OP. According to Theorem 2, N = NA defined by (1), or N = NA,β defined by (2). According to Theorem 3, N(x) < 1 provided x > 0. Therefore N = Na , or N = N{0} . Sufficiency of N = Na : According to Corollary 5, if N = Na , then I N is conjugate with IL (x, y) = max(x + y − 1, 0). According to ([1], Theorem 1), I N is an Rimplication. Sufficiency of N = N{0} : I N{0} = IGG , the R-implication generated by the continuous t-norm TP (x, y) = xy. Notice that although I N[0,1[ is not an R-implication generated by a left-continuous t-norm, it is the R-implication ILR generated by the non-left-continuous t-norm min(x, y), if x = 1 or y = 1 , for all x, y ∈ [0, 1].

Sufficiency of N = N[0,1[ : I N[0,1[ (x, y) = S(N[0,1[ (x), y) for any t-conorm S. Sufficiency of N = NA,β : Take S(x, y) = min(1, x + y + β xy). We can verify that S is a t-conorm (for the associativity, for all x, y, z ∈ [0, 1]: S(x, S(y, z)) = min(1, x + y + z + β xy + β yz + β xz + β 2xyz) = S(S(x, y), z), ) and that S(NA,β (x), y) = 1, 1−x+y+β y 1+β x , = I NA,β (x, y). if x ∈ A or x ≤ y if x ∈ / A and x > y Fuzzy Implications: Classification and a New Class 49 Consequently, I NA,β is an S-implication.

Mathematical Principles of Fuzzy Logic. Kluwer Academic Publishers, Boston (1999) 20. : R0 implication: characteristics and applications. Fuzzy Sets and Systems 131, 297–302 (2002) Fuzzy Implications: Classification and a New Class 51 21. : Fuzzy implication operators and generalized fuzzy method of cases. Fuzzy Sets and Systems 54, 23–37 (1993) 22. : Fuzzy IF-THEN Rules in Computational Intelligence: Theory and Applications. Kluwer Academic Publishers, Boston (1995) 23. : Fuzzy IF-THEN Rules in Computational Intelligence: Theory and Applications.

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