A method for fuzzy aggregation based on group expert evaluations

This paper introduces an approach to group decision-making based on the coordination index and similarity of the finite collections of fuzzy sets. The mathematical apparatus of this approach, based on the concept of maximal coordination, is constructed in the metric lattice of fuzzy sets. A specific kind of fuzzy aggregation operator is proposed. A method for fuzzy aggregation is introduced, thoroughly discussed and its algorithm determined. The practical example of application of the introduced method is offered as well.