利用用户认知的不确定性设计定向变异算子。首先，采用主成分分析法辨识用户认知的不确定性；

A directional mutation operator is designed by using the user's uncertain cognitive. The main ingredient analysis is used to identify the user's uncertain cognitive.

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综合应用概率论和可信性理论对随机和可认知混合不确定性参数进行建模，提出了基于概率论和可信性理论的不确定性设计方法。

The method of the uncertainty design using probability theory and credibility theory have been presented, which provides us with a useful modeling tool for random and epistemic parameter uncertainty.

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规划周期完成后，进行高层次项目设计，考虑所增加的不确定性。

Past the planning horizon, lay out the project at a higher level, reflecting the increased level of uncertainty.

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