Personalized trust incentive mechanisms with personality characteristics for minimum cost consensus in group decision making

Traditional group decision making is usually to force inconsistent decision-makers (Namely, decision makers whose consensus degree does not reach a predefined level/consensus threshold.) to revise their opinions in order to improve the group consensus level. But decision-makers with conservative, neutral and radical behaviors differ in the extent to which they adjust their opinions. Hence, this paper investigates a personalized trust incentive mechanisms with personality characteristics for minimum cost consensus in group decision making, including opinion incentive and trust incentive. Firstly, the trust-driven personalized incentive mechanisms for personality characteristics, such as conservative, neutral and radical, are established to improve the adoption intention of decision makers. And then, the trust incentive evolution model with personality characteristics is established to reveal that the trust held by the remaining group members towards conservative decision makers is stable, the trust towards neutral decision makers is enhanced, and the trust towards radical decision makers is weakened. Further, the minimum cost consensus model based on personalized trust incentive mechanism with personality characteristics is constructed to generate feedback opinions of these decision makers within their respective adjustment ranges, exploring the influence law of consensus efficiency in decision makers with different personality characteristics. Finally, an illustrative example on supplier selection in the cruise ship manufacturing industry is provided to demonstrate the rationality and superiority of the proposed method.