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arXiv 2501.06804math.OC
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一种面向非光滑非凸优化的平滑型基于共识的优化算法

A Smoothing Consensus-Based Optimization Algorithm for Nonsmooth Nonconvex Optimization

Jiazhen Wei, Wei Bian

AI总结:

针对传统基于共识的优化算法收敛分析受限于光滑目标函数的问题,提出结合平滑方法的新型CBO算法,可求解非凸非光滑非利普希茨连续最小化问题,给出理论分析与误差估计,并通过数值实验验证其性能。

摘要:

近年来,一种名为基于共识的优化(consensus-based optimization,CBO)算法的新型群体智能模型被提出用于求解全局优化问题。受伊藤公式条件限制,以往CBO有限粒子系统的收敛性分析主要针对光滑目标函数问题展开。本文借助平滑方法取得突破,提出一种不依赖平均场极限的有效CBO算法,用于求解非凸、非光滑且可能非利普希茨连续的最小化问题的全局解,并给出了理论分析。本文证明所提算法具有全局共识性,对任意初始数据均能收敛至同一公共状态。随后,本文针对所提算法状态对应的目标函数值向全局最小值收敛的情况给出了更精细的误差估计。最后,本文通过若干数值算例验证了所提方法在求解非光滑非凸最小化问题上的优异性能。

英文摘要:

Lately, a novel swarm intelligence model, namely the consensus-based optimization (CBO) algorithm, was introduced to deal with the global optimization problems. Limited by the conditions of Ito's formula, the convergence analysis of the previous CBO finite particle system mainly focuses on the problem with smooth objective function. With the help of smoothing method, this paper achieves a breakthrough by proposing an effective CBO algorithm for solving the global solution of a nonconvex, nonsmooth, and possible non-Lipschitz continuous minimization problem with theoretical analysis, which dose not rely on the mean-field limit. We indicate that the proposed algorithm exhibits a global consensus and converges to a common state with any initial data. Then, we give a more detailed error estimation on the objective function values along the state of the proposed algorithm towards the global minimum. Finally, some numerical examples are presented to illustrate the appreciable performance of the proposed method on solving the nonsmooth, nonconvex minimization problems.

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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