Deriving Weights of the Decision Makers Using AHP Group Consistency Measures

Abstract

In AHP group decision making it is desirable that decision makers achieve the highest degree of consensus concerning the group priority vector at both levels, local and the final. Based on this philosophy, we have developed a method to derive local group priority vector respecting the three group consistency measures: geometric cardinal consensus index (GCCI), group minimum violation coefficient (GMV) and ordinal consensus measure (OCM). Consistency of individual decisions against the group decision serves as an input to determine the weights of decision makers participating in the group and generate the group local priority vector. Proposed method rewards cooperation between members of the group and raises chances for their consensus.