Function and probability features of the fire water system were analysed. Reliability basic indicators for fire water system were put forward.
分析了消防水系统的功能及概率特征，提出消防水系统可靠性基本指标。
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。
The key problem to D-S reasoning is basic probability assignment function, so the algorithm implementation of D-S reasoning is a esrious problem.
在基于D-S推理的信息融合中，其关键问题是基本概率赋值函数的构造。
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