A Judgment Aggregation Method for Fuzzy Multi Criteria Decision Making

In most decision-making scenarios, the decision relies upon a multiplicity of factors/criteria which need to be selected and prioritized counting on the knowledge of a group of experts, with the aim of reaching a global decision. Through judgment aggregation models we seek a rational mechanism to reconcile individual judgments into a collective prioritization of requirements. In this paper we present a fuzzy multi-criteria group decision-making model, and experiment its application in credit rating determination, applying Majority Judgment as a method to consolidate the evaluations of a bank's board of direction into a shared and rational decision on SME rating.