Search Results for author: Mathieu Dagréou

Found 3 papers, 2 papers with code

A Lower Bound and a Near-Optimal Algorithm for Bilevel Empirical Risk Minimization

no code implementations17 Feb 2023 Mathieu Dagréou, Thomas Moreau, Samuel Vaiter, Pierre Ablin

Bilevel optimization problems, which are problems where two optimization problems are nested, have more and more applications in machine learning.

Bilevel Optimization

A framework for bilevel optimization that enables stochastic and global variance reduction algorithms

1 code implementation31 Jan 2022 Mathieu Dagréou, Pierre Ablin, Samuel Vaiter, Thomas Moreau

However, computing the gradient of the value function involves solving a linear system, which makes it difficult to derive unbiased stochastic estimates.

Bilevel Optimization

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