Estimation of off-the-grid sparse spikes with over-parametrized projected gradient descent: theory and application
Langue
en
Document de travail - Pré-publication
Résumé en anglais
In this article, we study the problem of recovering sparse spikes with overparametrized projected descent. We first provide a theoretical study of approximate recovery with our chosen initialization method: Continuous ...Lire la suite >
Mots clés en anglais
off-the-grid sparse recovery
non-convex methods
over-parametrization
projected gradient descent
microscopy
Project ANR
Régularisation performante de problèmes inverses en grande dimension pour le traitement de données - ANR-20-CE40-0001