Consistency and Consensus Based Group Decision Making with Intuitionistic Multiplicative Preference Relations

Abstract

The primary objective of this research is to apply a distance-based consensus-reaching method within the framework of Intuitionistic Multiplicative Preference Relations to a group project investment decision. Experts provide pairwise preference matrices that capture their degrees of preference, non-preference, and hesitation. By measuring the distance between individual and collective matrices, the process evaluates the level of consensus and, if necessary, initiates iterative adjustments to align expert opinions. Ul timately, we use intuitionistic outranking flows to rank the alternative. This method effectively addresses uncertainty and inconsistency, thereby enhancing the robustness of group decisions in real-world investment contexts.