Research Group:
Speaker:
Cristina Sgattoni
Institution:
University of Florence
Schedule:
Friday, May 22, 2020 - 14:00
Location:
Online
Location:
Zoom (sign in to get the link)
Abstract:
Spectral residual methods are derivative-free and low-cost per iteration procedures for solving nonlinear systems of equations. They are generally coupled with a nonmonotone linesearch strategy and compare well with Newton-based methods for large nonlinear systems and sequences of nonlinear systems. The residual vector is used as the search direction and choosing the steplength has a crucial impact on the performance. In this seminar we will address both theoretically and experimentally the steplength selection and provide results on a real application such as a rolling contact problem.