Andrea Simonetto: Time-varying personalized optimization

On Friday, September 9, 2022, Andrea Simonetto, a research professor at the Applied Mathematics Unit of ENSTA Paris, defended his thesis for his accreditation to supervise research to an international jury of specialists in continuous optimization.

Since receiving his PhD in Systems and Control from Delft University of Technology in 2012, Andrea Simonetto has devoted most of his research to two closely related areas: the effect of time and human dimensions in optimization and control algorithms.

While optimization was classically considered in a static framework, in which the best possible actions were deduced from unchanging needs and data, the accelerated evolution of our societies has given a critical aspect to the time dimension. A good example of this is the integration of renewable energies, which are intermittent by nature, into existing electrical networks, which introduces a notion of strong variability on sometimes very short time scales.

This same need is found when we address issues related to traffic, whether it is to make it more fluid or compatible with autonomous navigation. Not only does road traffic vary during the course of a single day, depending on the day of the week or the month, but the city itself and its infrastructures also evolve at their own pace.

Andrea Simonetto lors de la présentation de son mémoire d'HDR
Andrea Simonetto lors de la présentation de son mémoire d'Habilitation à diriger des recherches. Andrea Simonetto defending his thesis for his accreditation to supervise research.

In addition, there is the human dimension. While in the past optimization calculations were performed without any real consultation of the end users, the increasingly advanced interconnections (applications on smartphones, connected home, etc.), and their impacts on users, makes it essential to integrate the human dimension in the choice of options proposed by the optimization.

Au premier rang, une partie du jury d'experts internationaux en optimisation et contrôle.
Au premier rang, une partie du jury d'experts internationaux en optimisation et contrôle. In the front row, a part of the jury of international experts in optimization and control.

Proposing algorithms and mathematical models to obtain long-term optimal solutions taking into account these two dimensions has therefore been an important part of Andrea Simonetto's research over the last 10 years, leading to what he calls a personalized time-varying optimization.

The jury was composed of :

Professor Mikael Johansson, KTH, Sweden - Rapporteur

Professor Jérôme Malick, Grenoble Alpes University, CNRS, France - Rapporteur

Professor Vianney Perchet, ENSAE Paris, IPP, France - Rapporteur

Professor Alexandre d'Aspremont, ENS, CNRS, France - Examiner and President of the jury

Professor Antonin Chambolle, Université Paris Dauphine - PSL, CNRS, France - Examiner

Professor Julien Hendrickx, Université catholique de Louvain, Belgium - Examiner

Professor Colin Jones, EPFL, Switzerland - Examiner

Professor Lucas Schenato, University of Padua, Italy - Examiner

Le professeur Alexandre d'Aspremont (ENS, CNRS) annonçant les délibérations du jury qu'il présidait.
Le professeur Alexandre d'Aspremont (ENS, CNRS) annonçant les délibérations du jury qu'il présidait. Professor Alexandre d'Aspremont (ENS, CNRS) announcing the deliberations of the jury over which he presided.

In its report, the jury mentioned that it particularly appreciated the clarity of the presentation, which was in par with the one of the report, which was very pedagogical, as well as the perspective given to the major current issues, at the interface of optimization, control and sequential learning.

In the afternoon, jury members Mikael Johansson, Colin Jones, Lucas Schenato and Julien Hendrickx presented their own work in a seminar on optimization and control.