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arXiv 1307.4302math.OCcs.MScs.NAmath.NA
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基于一点的分割方案中全局optimization的Lipschitz梯度

Lipschitz gradients for global optimization in a one-point-based partitioning scheme

Dmitri E. Kvasov, Yaroslav D. Sergeyev

摘要:

研究了一个全局最优化问题,其中目标函数$f(x)$是一个多维黑箱函数,其梯度$f'(x)$满足超区间上的利普希茨条件,Lipschitz常数$K$未知.文献中已知通过使用$K$的先验给定估计、其自适应估计和局部Lipschitz常数的自适应估计来解决该问题的不同方法。最近,作者提出了一种一维算法,该算法使用$f'(x)$的Lipschitz常数的多个估计值(这种算法的存在是15年来的挑战)。在本文中,提出了一种新的多维几何方法,发展了这种一维方案的思想,并使用一个有效的基于一个点的分区策略。在800个多维检验函数上的数值实验表明,与流行的基于DIECT的方法相比,该方法具有相当好的性能。

英文摘要:

A global optimization problem is studied where the objective function $f(x)$ is a multidimensional black-box function and its gradient $f'(x)$ satisfies the Lipschitz condition over a hyperinterval with an unknown Lipschitz constant $K$. Different methods for solving this problem by using an a priori given estimate of $K$, its adaptive estimates, and adaptive estimates of local Lipschitz constants are known in the literature. Recently, the authors have proposed a one-dimensional algorithm working with multiple estimates of the Lipschitz constant for $f'(x)$ (the existence of such an algorithm was a challenge for 15 years). In this paper, a new multidimensional geometric method evolving the ideas of this one-dimensional scheme and using an efficient one-point-based partitioning strategy is proposed. Numerical experiments executed on 800 multidimensional test functions demonstrate quite a promising performance in comparison with popular DIRECT-based methods.

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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