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传统影响图模型不具备对群决策过程的建模能力.针对这一问题,提出了层次影响图模型.首先给出了层次影响图的定义,它是一个以层次方式排列的影响图的集合.然后建立了不同影响图之间的三种消息传递方式,研究了在能够接收外界消息情况下的影响图演算方法.最后使用一个群决策案例展示了建模和求解的过程.层次影响图采用了分解-联合的建模策略,将影响图的应用范围扩展到群决策领域.
The traditional influence graph model does not have the modeling ability to the group decision-making process.Aiming at this problem, a hierarchical impact graph model is proposed.Firstly, the definition of the hierarchical impact graph is given, which is a set of impact graphs arranged in a hierarchical manner. Then, we establish three kinds of message transmission modes between different influence diagrams, and study the method of influence diagram calculation under the condition of being able to receive external messages.Finally, we use a group decision case to demonstrate the modeling and solution process. Decomposition - a joint modeling strategy that extends the application of impact diagrams to the field of group decision making.