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arXiv 1306.3437math.OCq-fin.CPq-fin.PM
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半无限凸规划的割面算法及其在矩鲁棒optimization中的应用

A cutting surface algorithm for semi-infinite convex programming with an application to moment robust optimization

Sanjay Mehrotra, David Papp

摘要:

提出并分析了一般半无限凸最优化问题的中心割面算法,并利用该算法对分布鲁棒最优化问题提出了一种新的算法,其中不确定性集由具有给定矩界的概率分布组成.任意阶矩以及非多项式矩可以包括在公式中。我们发现,这会产生一个层次的最优化问题,降低风险规避水平,经典的鲁棒优化在频谱的一端,和随机规划在其他。虽然我们的主要动机是解决分布鲁棒最优化问题的时刻不确定性,一般半无限凸规划的切割面方法也是独立的利益。所提出的方法是适用于问题的不可微的半无限约束的索引由一个无限维的索引集。实例比较切割面算法的Kortanek和没有的中心切割平面算法表明,我们的算法的潜力,即使在传统的半无限凸规划问题的约束条件是可微的,并由一个指标集的低维的解决方案。在分析了切割面算法收敛速率后,我们将矩匹配场景生成算法扩展为一种概率算法,该算法可以在矩约束下找到最优的概率分布。这种分布最优化方法和中心切割面算法的组合产生的解决方案,家庭的分布鲁棒最优化问题,是相当普遍的比提出的日期。

英文摘要:

We present and analyze a central cutting surface algorithm for general semi-infinite convex optimization problems, and use it to develop a novel algorithm for distributionally robust optimization problems in which the uncertainty set consists of probability distributions with given bounds on their moments. Moments of arbitrary order, as well as non-polynomial moments can be included in the formulation. We show that this gives rise to a hierarchy of optimization problems with decreasing levels of risk-aversion, with classic robust optimization at one end of the spectrum, and stochastic programming at the other. Although our primary motivation is to solve distributionally robust optimization problems with moment uncertainty, the cutting surface method for general semi-infinite convex programs is also of independent interest. The proposed method is applicable to problems with non-differentiable semi-infinite constraints indexed by an infinite-dimensional index set. Examples comparing the cutting surface algorithm to the central cutting plane algorithm of Kortanek and No demonstrate the potential of our algorithm even in the solution of traditional semi-infinite convex programming problems whose constraints are differentiable and are indexed by an index set of low dimension. After the rate of convergence analysis of the cutting surface algorithm, we extend the authors' moment matching scenario generation algorithm to a probabilistic algorithm that finds optimal probability distributions subject to moment constraints. The combination of this distribution optimization method and the central cutting surface algorithm yields a solution to a family of distributionally robust optimization problems that are considerably more general than the ones proposed to date.

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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