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美军提出的“以费用为独立变量(CAIV)”方法从论证阶段开始,就强调需求、性能与费用三者之间的平衡,并采用费用-效能综合权衡优化模型进行系统费用和性能参数的最优决策.但是该模型没有考虑采办过程中的不确定因素,且由于决策者往往很关心权衡结果中费用与性能的置信水平问题,因此提出要将采办中的不确定性因素作为随机变量引入权衡模型,建立一种综合权衡优化的随机机会约束规划模型,并进行了示例验证.
The US proposed “cost-independent variables (CAIV)” approach has emphasized the balance between demand, performance and cost from the demonstration stage, and used cost-performance trade-offs to optimize system cost and performance parameters But the model does not consider the uncertainties in the procurement process, and because the decision makers are often concerned about the level of confidence in the cost and performance of the trade-off result, it is proposed that the uncertainty in the acquisition be taken as a random variable A trade-off model is introduced to establish a comprehensive trade-off and optimization stochastic chance constrained programming model and an example verification is carried out.