Three-Way Group Decision Based on Hierarchical Social Network

In group decision making of organization management, information interaction usually occurs via hierarchical social networks. In view of this, the relation and opinion exchange between decision makers and participants can influence the consensus reaching and collective wisdom of three-way group decision based on the hierarchical social networks. In this chapter, we deeply explore hierarchical social networks and discuss the three-way group decision consensus reaching by constructing adjustment mechanism based on the results of Ref. [6]. In light of the consensual loss information and Bayesian decision theory, we determine the classification rules of three-way group decision. Finally, we use an example of the medical equipment selection of purchasing department to elaborate and validate the proposed method presented in Ref. [6].