Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz., 2015, Volume 7, Issue 1, Pages 32–37
This article is cited in 1 scientific paper (total in 1 paper)
An approach to the comparison of fuzzy numbers in decision-making problems
V. I. Ukhobotov, E. S. Mihailova
Chelyabinsk State University
In decision-making problems, when a decision maker has information about unmanageable factors
in fuzzy numbers, the problem of its comparison appears. Nowadays, a lot of different methods of comparing fuzzy numbers have been proposed. However, none of them is universal. Moreover, almost each
method has pitfalls such as the difficulty of interpretation and inconsistency with human intuition. In the
decision making theory the character of the applied problem is a dominant factor of choosing the method
of comparing fuzzy numbers.
In this paper an approach of comparing fuzzy numbers has been proposed based on the comparison
of $\alpha$-cuts. Conceptions of strong and soft preferences are proposed. According to these definitions trapezoidal and bell-shaped fuzzy numbers have been compared. This method leads to finding the solution in
the lexicographic meaning of a certain multi-objective problem for some classes of fuzzy numbers.
Geometrical interpretation has been given for trapezoidal and bell-shaped fuzzy numbers.
fuzzy set; fuzzy number; comparison of fuzzy numbers; $\alpha$-cut.
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V. I. Ukhobotov, E. S. Mihailova, “An approach to the comparison of fuzzy numbers in decision-making problems”, Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz., 7:1 (2015), 32–37
Citation in format AMSBIB
\by V.~I.~Ukhobotov, E.~S.~Mihailova
\paper An approach to the comparison of fuzzy numbers in decision-making problems
\jour Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz.
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V. I. Ukhobotov, E. S. Mikhailova, “O sravnenii nechetkikh chisel v zadachakh prinyatiya reshenii”, Vestn. Udmurtsk. un-ta. Matem. Mekh. Kompyut. nauki, 26:1 (2016), 87–94
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