Structured two-point stepsize gradient methods for nonlinear least squares
Optimization and Control
2018-07-31 v1
Abstract
In this paper, we present two choices of structured spectral gradient methods for solving nonlinear least-squares problems. In the proposed methods, the scalar multiple of identity approximation of the Hessian inverse is obtained by imposing the structured quasi-Newton condition. Moreover, we propose a simple strategy for choosing the structured scalar in the case of negative curvature direction. Using the nonmonotone line search with the quadratic interpolation backtracking technique, we prove that these proposed methods are globally convergent under suitable conditions. Numerical experiment shows that the method is competitive with some recent developed methods.
Cite
@article{arxiv.1807.11200,
title = {Structured two-point stepsize gradient methods for nonlinear least squares},
author = {Hassan Mohammad and Mohammed Yusuf Waziri},
journal= {arXiv preprint arXiv:1807.11200},
year = {2018}
}