Fuzzy Sets and Fuzzy Logic-Based Methods in Multicriteria Decision Analysis

Part of the International Series in Operations Research & Management Science book series (ISOR, volume 142)


In this chapter, we discuss some fuzzy sets and fuzzy logic-based methods for multicriteria decision aid. Alternatives are identified with score vectors x ∈ [0, 1] n , and thus they can be seen as fuzzy sets, too. After discussion of integral-based utility functions, we introduce a transformation of score x into fuzzy quantity U(x). Orderings on fuzzy quantities induce orderings on alternatives. A special attention is paid to defuzzification-based orderings, especially to mean of maxima method. Our approach allows an easy incorporation of importance of criteria. Finally, a fuzzy logic-based construction method to build complete preference structures over set of alternatives is given.


Fuzzy set Fuzzy quantity Fuzzy utility Dissimilarity Defuzzification 


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© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of Mathematics, Faculty of Civil EngineeringSlovak University of TechnologyBratislavaSlovakia

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