arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1911.11366math.OC
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牛顿型多层最优化方法

Newton-type Multilevel Optimization Method

Chin Pang Ho, Michal Kocvara, Panos Parpas

摘要:

受线性方程组多重网格方法的启发,提出了求解结构化最优化问题的多层最优化方法。多层方法对最优化模型的结构做了更多的假设,因此,它们优于单级方法,特别是对于大规模模型。多级最优化方法的令人印象深刻的性能是一个经验观察,迄今为止还没有提出理论解释。为了解决这个问题,我们研究了一个多层方法,这是由二阶方法的收敛性。我们采取的第一步,建立一个最优化问题的结构是如何与多级算法的收敛速度。

英文摘要:

Inspired by multigrid methods for linear systems of equations, multilevel optimization methods have been proposed to solve structured optimization problems. Multilevel methods make more assumptions regarding the structure of the optimization model, and as a result, they outperform single-level methods, especially for large-scale models. The impressive performance of multilevel optimization methods is an empirical observation, and no theoretical explanation has so far been proposed. In order to address this issue, we study the convergence properties of a multilevel method that is motivated by second-order methods. We take the first step toward establishing how the structure of an optimization problem is related to the convergence rate of multilevel algorithms.

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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