An application of weighted OWA operator under interval-valued intuitionistic fuzzy settings

In this paper, a new operator, an interval-valued intuitionistic fuzzy weighted OWA (IFWOWA) operator, is defined to aggregate intuitionistic interval-valued fuzzy information. The newly proposed operator integrate the weights of experts and attributes together, the two weights of experts and attributes are not completely unknown in advance, we derive the weights only from the information expressed in the form of interval-valued intuitionistic fuzzy sets. Then, we use the developed weighted averaging(IVIFWA)operator to solve multi-attribute group decision making problem under interval-valued intuitionistic fuzzy settings.