At first, the basic probability assignment is established; then, the trust function is calculated; at last, the decision is made according to some combination rule.
首先建立基本概率赋值，然后计算信任函数，最后按照一定的组合规则作出决策。
Also pilot studies are carried out on some variables in the model including character variable, decision variable, probability of the sequent occurring and utility function.
对模型中的状态变量、决策变量、后果发生概率、效用函数等进行了初步研究。
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