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arXiv 2201.12254math.OC
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Hilbert空间中约束优化问题的精确增广拉格朗日函数 I:理论

Exact augmented Lagrangians for constrained optimization problems in Hilbert spaces I: Theory

M. V. Dolgopolik

AI总结:

本文针对Hilbert空间中的约束优化问题,提出并系统分析了一类连续可微且无Maratos效应的精确增广拉格朗日函数,给出了其梯度估计及KKT点成为其局部/全局极小点的充分条件。

摘要:

在这项由两部分组成的研究中,我们为Hilbert空间中的约束优化问题发展了一套关于所谓精确增广拉格朗日函数的一般理论。与传统的非光滑精确罚函数相比,这些增广拉格朗日函数对于光滑问题是连续可微的,并且不会遭受Maratos效应的影响,这使得它们特别适用于数值优化中的应用。我们的目标是详细研究精确增广拉格朗日函数的各种理论性质,并讨论这些函数在约束变分问题、带PDE约束的问题以及最优控制问题中的若干应用。第一部分论文致力于对Hilbert空间中优化问题的精确增广拉格朗日函数进行理论分析。我们获得了该增广拉格朗日函数及其梯度的若干有用估计,并给出了约束问题的KKT点对应于局部/全局最优解时成为精确增广拉格朗日函数的局部/全局极小点的几种充分条件。

英文摘要:

In this two-part study, we develop a general theory of the so-called exact augmented Lagrangians for constrained optimization problems in Hilbert spaces. In contrast to traditional nonsmooth exact penalty functions, these augmented Lagrangians are continuously differentiable for smooth problems and do not suffer from the Maratos effect, which makes them especially appealing for applications in numerical optimization. Our aim is to present a detailed study of various theoretical properties of exact augmented Lagrangians and discuss several applications of these functions to constrained variational problems, problems with PDE constraints, and optimal control problems. The first paper is devoted to a theoretical analysis of an exact augmented Lagrangian for optimization problems in Hilbert spaces. We obtain several useful estimates of this augmented Lagrangian and its gradient, and present several types of sufficient conditions for KKT-points of a constrained problem corresponding to locally/globally optimal solutions to be local/global minimisers of the exact augmented Lagrangian.

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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