Multicriteria Fuzzy Decision-making Methods Based on Interval-valued Fuzzy Sets

In this paper, a new method for handling multicriteria fuzzy decision-making problems based on interval-valued fuzzy sets is presented. The proposed method allows the degrees of satisfiability and non-satisfiability of each alternative with respect to a set of criteria to be represented by interval-valued fuzzy sets, respectively. Furthermore, the proposed method allows the decision-maker to assign the degrees of membership and non-membership of the criteria to the fuzzy concept "importance." The method proposed here can provide a useful way to efficiently help the decision-maker to make his decision.