注意这种改进依赖于我们的目标是要对目标函数进行最大化还是最小化。
Note that the improvement depends on whether the goal is to minimize or maximize the target function.
最好的工作点可以被定义为一个最小化或最大化的效用函数。
The best operating point can be defined as the one that minimizes or maximizes the utility function.
所以，即使在定义域内没有典型的单点能同时最大限度地最小化所有的目标函数，也只有一个解决方案可以选择。
Even though there is typically no single point in decision space that simultaneously minimizes all of the objective functions, only one solution can be chosen.
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