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arXiv 2402.06181math.OC
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时变光滑非凸优化的预测-校正算法

Prediction-Correction Algorithm for Time-Varying Smooth Non-Convex Optimization

Hidenori Iwakiri, Tomoya Kamijima, Shinji Ito, Akiko Takeda

AI总结:

针对时变光滑非凸优化,提出一种适用于大规模一般非凸问题的预测-校正算法,首次给出非强凸收敛性分析,实验证明其精度优于TVGD。

摘要:

时变优化问题在众多工程领域普遍存在,实时准确求解的能力日益重要。光滑时变优化中使用的预测-校正算法能达到比时变梯度下降(TVGD)算法更高的精度。然而,现有预测-校正算法均无法适用于一般非强凸函数,且大多数算法计算效率不足以求解大规模问题。本文提出一种新的预测-校正算法,适用于大规模一般非凸问题,且比TVGD更精确。此外,我们首次给出了TVGD和所提预测-校正算法在非强凸函数下的收敛性分析。在使用合成和真实数据集的数值实验中,所提算法能如理论分析所示降低收敛误差,并优于现有算法。

英文摘要:

Time-varying optimization problems are prevalent in various engineering fields, and the ability to solve them accurately in real-time is becoming increasingly important. The prediction-correction algorithms used in smooth time-varying optimization can achieve better accuracy than that of the time-varying gradient descent (TVGD) algorithm. However, none of the existing prediction-correction algorithms can be applied to general non-strongly-convex functions, and most of them are not computationally efficient enough to solve large-scale problems. Here, we propose a new prediction-correction algorithm that is applicable to large-scale and general non-convex problems and that is more accurate than TVGD. Furthermore, we present convergence analyses of the TVGD and proposed prediction-correction algorithms for non-strongly-convex functions for the first time. In numerical experiments using synthetic and real datasets, the proposed algorithm is shown to be able to reduce the convergence error as the theoretical analyses suggest and outperform the existing 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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