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arXiv 1501.02011math.OC
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无约束optimization的两个全局收敛的非单调置信域方法

Two globally convergent nonmonotone trust-region methods for unconstrained optimization

Masoud Ahookhosh, Susan Ghaderi

摘要:

本文讨论了求解非线性无约束最优化问题的几种具有非单调策略的置信域方法。更具体地说,使用非单调技术在非线性最优化的重要性,然后提出了两个新的非单调项,并将其组合到传统的置信域框架进行了研究。证明了这两种算法整体收敛于一阶和二阶稳定点,并具有局部超线性和平方收敛速率。数值实验的\textsf{CUTEst}测试收集无约束问题和一些高度非线性的检验函数,其中最先进的非单调置信域方法之间的比较显示所提出的非单调格式的效率。

英文摘要:

This paper addresses some trust-region methods equipped with nonmonotone strategies for solving nonlinear unconstrained optimization problems. More specifically, the importance of using nonmonotone techniques in nonlinear optimization is motivated, then two new nonmonotone terms are proposed, and their combinations into the traditional trust-region framework are studied. The global convergence to first- and second-order stationary points and local superlinear and quadratic convergence rates for both algorithms are established. Numerical experiments on the \textsf{CUTEst} test collection of unconstrained problems and some highly nonlinear test functions are reported, where a comparison among state-of-the-art nonmonotone trust-region methods show the efficiency of the proposed nonmonotne schemes.

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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