Search Results for author: Fabien Panloup

Found 4 papers, 0 papers with code

Unadjusted Langevin algorithm with multiplicative noise: Total variation and Wasserstein bounds

no code implementations28 Dec 2020 Gilles Pages, Fabien Panloup

In this paper, we focus on non-asymptotic bounds related to the Euler scheme of an ergodic diffusion with a possibly multiplicative diffusion term (non-constant diffusion coefficient).

Probability Statistics Theory Statistics Theory

On the cost of Bayesian posterior mean strategy for log-concave models

no code implementations8 Oct 2020 Sébastien Gadat, Fabien Panloup, Clément Pellegrini

To answer this question, we establish some quantitative statistical bounds related to the underlying Poincar\'e constant of the model and establish new results about the numerical approximation of Gibbs measures by Cesaro averages of Euler schemes of (over-damped) Langevin diffusions.

Stochastic Heavy Ball

no code implementations14 Sep 2016 Sébastien Gadat, Fabien Panloup, Sofiane Saadane

This paper deals with a natural stochastic optimization procedure derived from the so-called Heavy-ball method differential equation, which was introduced by Polyak in the 1960s with his seminal contribution [Pol64].

Second-order methods Stochastic Optimization

Regret bounds for Narendra-Shapiro bandit algorithms

no code implementations17 Feb 2015 Sébastien Gadat, Fabien Panloup, Sofiane Saadane

Narendra-Shapiro (NS) algorithms are bandit-type algorithms that have been introduced in the sixties (with a view to applications in Psychology or learning automata), whose convergence has been intensively studied in the stochastic algorithm literature.

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