A new method for interval-valued intuitionistic group decision making

Ivanosca A. Da SilvaBenjamín BedregalRegivan H. N. SantiagoAdrião D. Dória Neto

In this paper we provide an extension of weighted average operator for interval-valued intuitionistic degrees and apply it as part of adaptation of weighted voting strategy in order to develop a new method for interval-valued intuitionistic fuzzy group decision making. In order to rank alternatives we use total order introduced by Xu and Yager for interval-valued intuitionistic degrees. A characteristic of this proposed method is that it works with interval-valued intuitionistic fuzzy values in all moments and therefore considers the uncertainty on the membership and non-membership in all steps of decision making. The method provide good results and compared with other approaches it is very simple.

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