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arXiv 2008.08677math.OC
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论优化理论中的隐变量

On implicit variables in optimization theory

Matúš Benko, Patrick Mehlitz

AI总结:

本文指出将隐变量视为显式变量会诱发伪局部最优解,推导了多种莫尔杜霍维奇型平稳性条件并比较了相关约束规格,在一般变分分析框架下应用于多类优化问题。

摘要:

数学规划中的隐变量是指那些无需被优化但用于建模可行性条件的变量。它们频繁出现在优化理论的几个不同问题类别中,包括双层规划、评估多目标优化以及带有松弛变量的非线性优化问题。为了处理隐变量,它们通常被解释为显式变量。在此,我们首先指出这是一种轻率的做法,会诱发人为的局部最优解。随后,我们推导了多种莫尔杜霍维奇平稳性类型的必要最优性条件,这些条件一方面对应于将隐变量视为显式变量,另一方面则仅隐式地利用它们来建模约束。我们将对所获得的平稳性条件以及相关的底层约束规格进行详细比较。总体而言,我们在一个相当一般的框架下进行,依赖于变分分析的现代工具。最后,我们将我们的发现应用于数学优化的不同知名问题类别,以直观展示所获得的理论。

英文摘要:

Implicit variables of a mathematical program are variables which do not need to be optimized but are used to model feasibility conditions. They frequently appear in several different problem classes of optimization theory comprising bilevel programming, evaluated multiobjective optimization, or nonlinear optimization problems with slack variables. In order to deal with implicit variables, they are often interpreted as explicit ones. Here, we first point out that this is a light-headed approach which induces artificial locally optimal solutions. Afterwards, we derive various Mordukhovich-stationarity-type necessary optimality conditions which correspond to treating the implicit variables as explicit ones on the one hand, or using them only implicitly to model the constraints on the other. A detailed comparison of the obtained stationarity conditions as well as the associated underlying constraint qualifications will be provided. Overall, we proceed in a fairly general setting relying on modern tools of variational analysis. Finally, we apply our findings to different well-known problem classes of mathematical optimization in order to visualize the obtained theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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