No. 2023.03
Repulsion dynamics for uniform Pareto front approximation in multi-objective optimization problems
G. Borghi
Subject: Multi-objective optimization, gradient-free methods, heuristic algorithms, potential based diversity measure, scalarization

Abstract

Scalarization allows to solve a multi-objective optimization problem by solving many single-objective sub-problems, uniquely determined by some parameters. In this work, several adaptive strategies to select such parameters are proposed in order to obtain a uniform approximation of the Pareto front. This is done by introducing a heuristic dynamics where the parameters interact through a binary repulsive potential. The approach aims to minimize the associated energy potential which is used to quantify the diversity of the computed solutions. A stochastic component is also added to overcome non-optimal energy configurations. Numerical experiments show the validity of the proposed approach for bi- and tri-objectives problems with different Pareto front geometries.

Reference

PAMM, Vol. 23, Issue 1 e202200285

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arXiv:2211.03378