$\ell_0$-Norm Multiobjective Optimization Models Motivated by Applications to Proton Therapy
Year: 2025
Type: preprint
Abstract: The paper is devoted to investigating single-objective and multiobjective optimization problems involving the $\ell_0$-norm function, which is nonconvex and nondifferentiable. Our motivation comes from proton beam therapy models in cancer research. The developed approach uses subdifferential tools of variational analysis and the Gerstewitz (Tammer) scalarization function in multiobjective optimization. Based on this machinery, we propose several algorithms of the subgradient type and conduct their convergence analysis. The obtained results are illustrated by numerical examples, which reveal some characteristic features of the proposed algorithms and their interactions with the gradient descent.
Source: arXiv (Cornell University)
Authors: Cong, Xiaoda, Ding, Xuanfeng, Mordukhovich, Boris, Nguyen, Anh Vu, Zhao, Lewei
Language: English
Subfield: Computational Theory and Mathematics
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4416064154