Fuzzy multiple attributes hierarchical group decision-making based on the ranking values of interval type-2 fuzzy sets

In this paper, we present a new method for handling fuzzy multiple attributes hierarchical group decision-making problems based on the ranking values of interval type-2 fuzzy sets. The proposed method provides us a useful way to handle fuzzy multiple attributes hierarchical group decision-making problems in a more flexible and more intelligent manner due to the fact that it uses interval type-2 fuzzy sets rather than traditional type-1 fuzzy sets to represent the evaluating values and the weights of attributes.