<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This study develops a new conjugate gradient (CG) search direction that incorporates a well defined spectral parameter while the step size is required to satisfy the famous strong Wolfe line search (SWP) strategy. The proposed spectral direction is derived based on a recent method available in the literature, and satisfies the sufficient descent condition irrespective of the line search strategy and without imposing any restrictions or conditions. The global convergence results of the new formula are established using the assumption that the gradient of the defined smooth function is Lipschitz continuous. To illustrate the computational efficiency of the new direction, the study presents two sets of experiments on a number of benchmark functions. The first experiment is performed by setting uniform SWP parameter values for all the algorithms considered for comparison. For the second experiment, the study evaluates the performance of all the algorithms by considering the exact SWP parameter values used for the numerical experiments as reported in each work. The idea of these experiments is to study the influence of parameters in the computational efficiency of various CG algorithms. The results obtained demonstrate the effect of the parameter value on the robustness of the algorithms.</p>
</abstract>

This study develops a new conjugate gradient (CG) search direction that incorporates a well defined spectral parameter while the step size is required to satisfy the famous strong Wolfe line search (SWP) strategy. The proposed spectral direction is derived based on a recent method available in the literature, and satisfies the sufficient descent condition irrespective of the line search strategy and without imposing any restrictions or conditions. The global convergence results of the new formula are established using the assumption that the gradient of the defined smooth function is Lipschitz continuous. To illustrate the computational efficiency of the new direction, the study presents two sets of experiments on a number of benchmark functions. The first experiment is performed by setting uniform SWP parameter values for all the algorithms considered for comparison. For the second experiment, the study evaluates the performance of all the algorithms by considering the exact SWP parameter values used for the numerical experiments as reported in each work. The idea of these experiments is to study the influence of parameters in the computational efficiency of various CG algorithms. The results obtained demonstrate the effect of the parameter value on the robustness of the algorithms.

A Descent Generalized RMIL Spectral Gradient Algorithm for Optimization Problems

Faculty of Education and Arts, Sohar University

International Journal of Applied Mathematics and Computer Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"A Descent Generalized RMIL Spectral Gradient Algorithm for Optimization Problems"}

This study develops a new conjugate gradient (CG) search direction that incorporates a well defined spectral parameter while the step size is required to...

A Descent Generalized RMIL Spectral Gradient Algorithm for Optimization Problems

Pubblicato online: 25 giu 2024

Pagine: 225 - 233

Ricevuto: 03 ott 2023

Accettato: 14 feb 2024

DOI: https://doi.org/10.61822/amcs-2024-0016

Parole chiave
optimization models, spectral CG algorithm, global convergence, line search strategy

© 2024 Ibrahim M. Sulaiman et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A Descent Generalized RMIL Spectral Gradient Algorithm for Optimization Problems

Pubblicato online: 25 giu 2024

Pagine: 225 - 233

Ricevuto: 03 ott 2023

Accettato: 14 feb 2024

DOI: https://doi.org/10.61822/amcs-2024-0016

Parole chiaveoptimization models, spectral CG algorithm, global convergence, line search strategy

© 2024 Ibrahim M. Sulaiman et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
optimization models, spectral CG algorithm, global convergence, line search strategy