Seminar

Past

Adaptive robustness and sub-Gaussian deviations in sparse linear regression through Pivotal Double SLOPE

Mohamed Ndaoud

  • Date6 October 2022
  • Time 11h00 - 12h15
  • Room Auditorium 3

Résumé

In this talk we first review the framework of robust estimation where robustness can be with respect to outliers or heavy-tailed noise. Then, we consider the sparse linear model where some of the observations can be corrupted and the noise heavy-tailed. After deriving the minimax quadratic risk for estimation of the signal, we propose a practical and fully adaptive procedure that is optimal. Our procedure corresponds to solving a novel penalized pivotal estimation problem. As a result, we develop a new method that is not only minimax optimal and robust but also enjoys sub-Gaussian deviations even in the presence of heavy-tailed noise. Joint with S. Minsker and L. Wang.

Other seminars

To be announced

  • Seminar

  • MAD-Stat. Seminar

  • Date 4 March 2027

  • Place Auditorium JJ Laffont

  • Speaker or organiser Agnes Lagnoux (Ecole Normale Supérieure - Université Paris Sciences & Lettres)

Détails

Convergence Rates for Distribution Matching with Sliced Optimal Transport

  • Seminar

  • MAD-Stat. Seminar

  • Date 10 December 2026

  • Place Auditorium 6

  • Speaker or organiser Gauthier Louis Thurin (Université de Bordeaux)

Détails

Limits of uniform spanning trees and forests

  • Seminar

  • MAD-Stat. Seminar

  • Date 3 December 2026

  • Place Auditorium JJ Laffont

  • Speaker or organiser Eleanor Archer (Université Paris-Dauphine)

Détails