Extension of the VIKOR method to dynamic intuitionistic fuzzy multiple attribute decision making

The aim of this paper is to extend the VIKOR method for dynamic intuitionistic fuzzy multiple attribute decision making (DIF-MADM). Two new aggregation operators called dynamic intuitionistic fuzzy weighted geometric (DIFWG) operator and uncertain dynamic intuitionistic fuzzy weighted geometric (UDIFWG) operator are presented. A procedure based on the DIFWG operator is developed to solve the dynamic intuitionistic fuzzy multiple attribute decision making (DIF-MADM) problems where all the decision information about values takes the form of intuitionistic fuzzy numbers collected at different periods, a procedure based on the UDIFWG operator is developed for DIF-MADM under interval uncertainty in which all the decision information about attribute values takes the form of interval-valued intuitionistic fuzzy numbers collected at different periods. Finally, a numerical example is used to illustrate the applicability of the proposed approach.