Vianney Perchet

My research sits at the interface of machine learning and game theory, at the junction of mathematics, computer science and economics. It ranges from pure theory — optimal rates of convergence of sequential learning algorithms — to concrete applications such as recommender systems, online advertising auctions and the design of transparent and fair marketplaces.

I have been a professor at CREST (Centre de recherche en économie et statistique) at ENSAE Paris since 2019, and a part-time distinguished researcher at the Criteo AI Lab since 2017. Together with Patrick Loiseau, I co-lead FairPlay, the joint Criteo–Inria–Institut Polytechnique de Paris team studying the impact of AI on the design of transparent and fair marketplaces. Before joining ENSAE, I was a professor and head of the mathematics department at ENS Paris-Saclay (CMLA, now Centre Borelli, 2016–2019), and before that assistant professor at Université Paris Diderot (LPMA, 2011–2015).

When I'm not proving theorems, I'm on a handball court with my team at US Palaiseau. Proudest moment: winning the French national cup in 2022 — with the final played at Bercy, no less. Some results are worth more than others.