Aggregation of fuzzy opinions under group decision making

Abstract

In this paper, a method is proposed for aggregating individual fuzzy opinions into a group fuzzy consensus opinion. This paper presents a procedure for aggregating the expert opinions. First, we define the index of consensus of each expert to the other experts using a similarity measure. Then, we aggregate the experts using the index of consensus and the importance of each expert. Finally, a numerical example is given to apply our model.