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arXiv 1607.01280math.NAcs.NA
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基于动态系统方法的自适应牛顿法

An Adaptive Newton-Method Based on a Dynamical Systems Approach

Mathematics Institute, University of Bern(伯尔尼大学数学研究所)

Mario Amrein, Thomas P. Wihler

AI总结:

本文提出一种基于动态系统的自适应牛顿法,通过调整步长控制策略减少原始方法的混沌行为,同时保持二次收敛性。

摘要:

传统牛顿法在Banach空间中求解非线性算子方程的讨论是在连续牛顿法的背景下进行的。这种设定使得牛顿法可以被解释为一个离散的动力系统,从而可以置于自适应步长控制程序的框架中。通过这样做,我们的目标是在不丧失接近根部的二次收敛性质的情况下,减少原始方法的混沌行为。修改后的方案通过各种代数和微分方程的例子进行了性能展示。

英文摘要:

The traditional Newton method for solving nonlinear operator equations in Banach spaces is discussed within the context of the continuous Newton method. This setting makes it possible to interpret the Newton method as a discrete dynamical system and thereby to cast it in the framework of an adaptive step size control procedure. In so doing, our goal is to reduce the chaotic behavior of the original method without losing its quadratic convergence property close to the roots. The performance of the modified scheme is illustrated with various examples from algebraic and differential equations.

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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