Abstract:

The aim of this paper is to research the consistency problem in interval-valued intuitionistic fuzzy multi-attribute group decision making and introduce an automatic approach to reaching consistency among group opinions. First, these individual decision matrices are aggregated into a group decision matrix by using the operation rule and aggregation of the interval-valued fuzzy number. And then, a convergent interactive algorithm is performed to gain a consentaneous group decision matrix. The aggregation operator and ranking rules are used to choose the desirable alternative. Finally, the convergence and order preservation are demonstrated, and the feasibility and effectiveness are verified by a practical example.