The Sugeno fuzzy integral of concave functions

Document Type: Original Manuscript

Authors

1 Faculty of Mathematics, Statistics and Computer Sciences, Semnan University

2 Department of Computer Science, Paderborn University, Paderborn, Germany

3 Hanyang University

Abstract

The fuzzy integrals are a kind of fuzzy measures acting on fuzzy sets. They can be viewed as an average membership
value of fuzzy sets. The value of the fuzzy integral in a decision making environment where uncertainty is present
has been well established. Most of the integral inequalities studied in the fuzzy integration context normally consider
conditions such as monotonicity or comonotonicity. In this paper, we are trying to extend the fuzzy integrals to the
concept of concavity. It is shown that the Hermite-Hadamard integral inequality for concave functions is not satisfied in
the case of fuzzy integrals. We propose upper and lower bounds on the fuzzy integral of concave functions. We present
a geometric interpretation and some examples in the framework of the Lebesgue measure to illustrate the results.


Keywords


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