Previous |  Up |  Next

Article

Title: A note on resolving inconsistency of fuzzy relational equations on Łukasiewicz algebra (English)
Author: Li, Pingke
Language: English
Journal: Kybernetika
ISSN: 0023-5954 (print)
ISSN: 1805-949X (online)
Volume: 62
Issue: 4
Year: 2026
Pages: 735-754
Summary lang: English
.
Category: math
.
Summary: The inconsistency of fuzzy relational equations is frequently encountered when modelling an inference system with fuzzy logic. A polynomial-time direct search procedure is designed to resolve the inconsistency for fuzzy relational equations on Łukasiewicz algebra by minimizing the maximum absolute deviation to the right-hand side vector. Alternatively, a reformulation approach is proposed by minimizing instead the sum of absolute deviations. It results in a polynomial-sized mixed integer linear programming problem and hence, may be readily solved with the aid of an off-the-shelf optimization solver. This reformulation approach is flexible in nature and can be adjusted to deal with some other problems related to the inconsistency of fuzzy relational equations. (English)
Keyword: fuzzy relational equations
Keyword: inconsistency
Keyword: optimal approximation
Keyword: mixed integer linear programming
MSC: 08A72
MSC: 15B15
MSC: 90C11
DOI: 10.14736/kyb-2026-4-0735
.
Date available: 2026-10-07T10:24:26Z
Last updated: 2026-10-07
Stable URL: http://hdl.handle.net/10338.dmlcz/153781
.
Reference: [1] Baccelli, F., Cohen, G., Olsder, G. J., Quadrat, J.-P.: Synchronization and Linearity: An Algebra for Discrete Event Systems..Wiley, Chichester 1992.
Reference: [2] Baaj, I.: On the handling of inconsistent systems of max-min fuzzy relational equations..Fuzzy Sets Syst. 482 (2024), 108912.
Reference: [3] Baaj, I.: On the handling of inconsistent systems based on max-product and max-Lukasiewicz compositions..Fuzzy Sets Syst. 498 (2025), 109142.
Reference: [4] Bělohlávek, R.: Fuzzy Relational Systems: Foundations and Principles..Springer, Berlin 2002.
Reference: [5] Butkovič, P.: Max-linear Systems: Theory and Algorithms..Springer, Berlin 2010. Zbl 1202.15032
Reference: [6] Cechlárová, K.: A note on unsolvable systems of max-min (fuzzy) equations..Linear Algebra Appl. 310 (2000), 123-128. MR 1753171,
Reference: [7] Cechlárová, K., Cuninghame-Green, R. A.: Soluble approximation of linear systems in max-plus algebra..Kybernetika 39 (2003), 137-141. MR 1996552
Reference: [8] Cechlárová, K., Diko, P.: Resolving infeasibility in extremal algebras..Linear Algebra Appl. 290 (1999), 267-273. MR 1672997,
Reference: [9] Cimler, R., Gavalec, M., Zimmermann, K.: An optimization problem on the image set of a (max, min) fuzzy operator..Fuzzy Sets Syst. 341 (2018), 113-122.
Reference: [10] Cuninghame-Green, R. A.: Minimax Algebra, Lecture Notes in Economics and Mathematical Systems, Vol. 166..Springer, Berlin 1979.
Reference: [11] Cuninghame-Green, R. A., Cechlárová, K.: Residuation in fuzzy algebra and some applications..Fuzzy Sets Syst. 71 (1995), 227-239.
Reference: [12] Baets, B. De: Analytical solution methods for fuzzy relational equations..In: Fundamentals of Fuzzy Sets, The Handbooks of Fuzzy Sets Series, Vol. 1 (D. Dubois and H. Prade, eds.), Kluwer, Dordrecht 2000, pp. 291-340. Zbl 0970.03044
Reference: [13] Nola, A. Di, Lettieri, A., Perfilieva, I., Novák, V.: Algebraic analysis of fuzzy systems..Fuzzy Sets Syst. 158 (2007), 1-22.
Reference: [14] Gavalec, M., Němcová, Z., Sergeev, S.: Tropical linear algebra with the Łukasiewicz T-norm..Fuzzy Sets Syst. 276 (2015), 131-148.
Reference: [15] Gondran, M., Minoux, M.: Graphs, Dioids and Semirings: New Models and Algorithms..Springer, New York 2008. Zbl 1201.16038
Reference: [16] Gotoh, J., Uryasev, S.: Two pairs of families of polyhedral norms versus $\ell_p$-norms: proximity and applications in optimization..Math. Programm. 156 (2016), 391-431.
Reference: [17] Hájek, P.: Metamathematics of Fuzzy Logic..Kluwer, Dordrecht 1998. Zbl 1007.03022
Reference: [18] Klement, E. P., Mesiar, R., Pap, E.: Triangular Norms..Kluwer, Dordrecht 2000. Zbl 1087.20041
Reference: [19] Li, P.: A heuristic method to compute the approximate postinverses of a fuzzy matrix..IEEE Trans. Fuzzy Syst. 22 (2014), 1347-1351.
Reference: [20] Li, P.: A note on resolving the inconsistency of one-sided max-plus linear equations..Kybernetika 55 (2019), 531-539.
Reference: [21] Li, P.: On sparsity of approximate solutions to max-plus linear systems..Kybernetika 60 (2024), 412-425.
Reference: [22] Li, P.: Linear optimization over the approximate solutions of a system of max-min equations..Fuzzy Sets Syst. 484 (2024), 108946.
Reference: [23] Li, P.: A reformulation approach to resolving the inconsistency of max-min equations on fuzzy algebra..Int. J. General Syst. 54 (2025), 1014-1026.
Reference: [24] Li, P., Fang, S.-C.: On the resolution and optimization of a system of fuzzy relational equations with sup-$T$ composition..Fuzzy Optim. Decision Making 7 (2008), 169-214. Zbl 1169.90493,
Reference: [25] Li, P., Fang, S.-C.: A survey on fuzzy relational equations. Part I: Classification and solvability..Fuzzy Optim. Decision Making 8 (2009), 179-229.
Reference: [26] Li, P., Fang, S.-C.: Latticized linear optimization on the unit interval..IEEE Trans. Fuzzy Syst. 17 (2009), 1353-1365.
Reference: [27] Li, P., Fang, S.-C.: Chebyshev approximation of inconsistent fuzzy relational equations with max-$T$ composition..In: Fuzzy Optimization (W. A. Lodwick and J. Kacprzyk, eds.), Springer, Berlin 2010, pp. 109-124.
Reference: [28] Pedrycz, W.: Numerical and applicational aspects of fuzzy relational equations..Fuzzy Sets Syst. 11 (1983), 1-18.
Reference: [29] Pedrycz, W.: Inverse problem in fuzzy relational equations..Fuzzy Sets Syst. 36 (1990), 277-291.
Reference: [30] Peeva, K., Kyosev, Y.: Fuzzy Relational Calculus: Theory, Applications and Software..World Scientific, New Jersey 2004. Zbl 1083.03048
Reference: [31] Perfilieva, I., Novák, V.: System of fuzzy relation equations as a continuous model of if–then rules..Inf. Sci. 177 (2007), 3218-3227.
Reference: [32] Sanchez, E.: Resolution of composite fuzzy relation equations..Inform. Control 30 (1976), 38-48.
Reference: [33] Tharwat, A., Zimmermann, K.: One class of separable optimization problems: Solution method, application..Optimization 59 (2010), 619-625.
Reference: [34] Zimmermann, K.: Disjunctive optimization, max-separable problems and extremal algebras..Theoret. Computer Sci. 293 (2003), 45-54.
.

Files

Files Size Format View
Kybernetika_62-2026-4_7.pdf 454.5Kb application/pdf View/Open
Back to standard record
Partner of
EuDML logo