SCRO / Journées de l'optimisation
HEC Montréal, 2931 mai 2023
CORSJOPT2023
HEC Montréal, 29 — 31 mai 2023
Tutorial : Blackbox optimization: Algorithms and applications
29 mai 2023 10h30 – 12h10
Salle: Walter Capital (bleu)
Présidée par Youssef Diouane
1 présentation

10h30  12h10
Blackbox optimization: Algorithms and applications
A blackbox optimization problem is such that its objective(s) and constraints are provided by a computer code or an experiment, a simulation seen as a blackbox. This blackbox may fail to evaluate, be timeconsuming, be contaminated by noise, etc. Most importantly, analytical expressions of the problem, including derivatives, are unavailable. In such a context, optimization methods that do not rely on derivatives are needed. These derivativefree optimization algorithms exist since the 50’s, but have rapidly evolved over the last 25 years. This tutorial introduces several examples of applications, including hyperparameter tuning and the design of a solar power plant, and gives an overview of the different families of methods, with a focus on algorithms that are not heuristics since they possess mathematical guarantees of convergence. Several features will be highlighted, such as constraints handling, multiobjective optimization, discrete variables as well as the use of models and surrogates. The NOMAD software package, designed for blackbox optimization, will be used to illustrate these features.