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arXiv 2207.14756math.OCmath.STstat.TH
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具有无限维决策空间的非凸风险厌恶随机优化的渐近一致性

Asymptotic Consistency for Nonconvex Risk-Averse Stochastic Optimization with Infinite Dimensional Decision Spaces

Johannes Milz, Thomas M. Surowiec

AI总结:

本文研究了无限维决策空间下的非凸风险厌恶随机优化问题,利用隐藏的范数紧致性质和变分收敛理论,证明了其经验逼近估计量的渐近一致性,并应用于最优控制和科学机器学习等领域。

摘要:

随机优化问题的经验逼近的最优值和最优解可以被视为其真实值的统计估计量。从这个角度来看,理解当样本量趋于无穷大时这些估计量的渐近行为非常重要。这一研究领域在随机规划中有着悠久的传统。然而,对于决策变量取自无限维空间的问题,文献中缺乏一致性分析,这类问题出现在最优控制、科学机器学习和统计估计中。通过利用这些应用中发现的典型问题结构,这些结构为解集产生了隐藏的范数紧致性质,我们证明了在无限维空间中表述的非凸风险厌恶随机优化问题的一致性结果。该证明基于变分收敛理论中的几个关键结果。这些理论结果在文献中出现的几个重要问题类别上得到了验证。

英文摘要:

Optimal values and solutions of empirical approximations of stochastic optimization problems can be viewed as statistical estimators of their true values. From this perspective, it is important to understand the asymptotic behavior of these estimators as the sample size goes to infinity. This area of study has a long tradition in stochastic programming. However, the literature is lacking consistency analysis for problems in which the decision variables are taken from an infinite dimensional space, which arise in optimal control, scientific machine learning, and statistical estimation. By exploiting the typical problem structures found in these applications that give rise to hidden norm compactness properties for solution sets, we prove consistency results for nonconvex risk-averse stochastic optimization problems formulated in infinite dimensional space. The proof is based on several crucial results from the theory of variational convergence. The theoretical results are demonstrated for several important problem classes arising in the literature.

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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