lundi 19 février 2024

The next session of the OptAzur seminars will take place on Monday February 19th, 2024 at 2pm in the conference room 007 at laboratoire I3S.

We will have the pleasure to welcome Juan Peypouquet (University of Groningen) and Khazhgali Kozhasov (Université Côte d’Azur), please see below for titles and abstracts.

14h - Juan Peypouquet (University of Groningen)

Accelerated optimization algorithms: the good, the bad and the odd

We give an accessible introduction to accelerated optimization algorithms. We will comment on the main ideas–including physical principles–that have led to a deeper understanding of their behavior, and produced new design strategies to further improve their numerical performance.

15h15 - Khazhgali Kozhasov (LJAD, Nice)

Completely monotone functions and applications

Complete monotonicity of a smooth function on a convex cone is a strong property given by infinitely many sign conditions on the directional derivatives of the function. I will discuss results and questions around this concept that are motivated by research in convex optimization (interior-point methods), algebraic statistics (exponential families) and real algebraic geometry (hyperbolic and nonnegative polynomials). The talk is based on joint works with M. Michalek, B. Sturmfels and J.-B. Lasserre.
https://optazur.github.io/