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A nonmonotone filter trust region method for the system of nonlinear equations

机译:非线性方程组的非单调滤波器信赖域方法

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摘要

In this paper, we present a nonmonotone filter trust region method to attack the system of nonlinear equations. The system of nonlinear equations is transformed into a constrained nonlinear programming problem at each step: some equations are treated as constraints while the others act as objective functions. Compared with the traditional filter strategies, our algorithm is flexible to accept trail steps by means of the nonmonotone filter technique. Moreover, the restoration phase is not needed so that the scale of the calculation is decreased in a certain degree. Global convergence is proven under some suitable conditions. Numerical experiments also show the efficiency of the algorithm.
机译:在本文中,我们提出了一种非单调滤波器信赖域方法来攻击非线性方程组。非线性方程组在每一步都转化为约束非线性规划问题:一些方程被视为约束,而另一些则充当目标函数。与传统的滤波策略相比,我们的算法通过非单调滤波技术可以灵活地接受步长。而且,不需要恢复阶段,因此计算规模在一定程度上减小了。在某些适当条件下证明了全球趋同。数值实验也证明了该算法的有效性。

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