A blob method for inhomogeneous diffusion with applications to multi-agent control and sampling

K Craig, K Elamvazhuthi, M Haberland… - Mathematics of …, 2023 - ams.org
As a counterpoint to classical stochastic particle methods for linear diffusion equations, such
as Langevin dynamics for the Fokker-Planck equation, we develop a deterministic particle …

Lipschitz-Regularized Gradient Flows and Generative Particle Algorithms for High-Dimensional Scarce Data

H Gu, P Birmpa, Y Pantazis, L Rey-Bellet… - SIAM Journal on …, 2024 - SIAM
We have developed a new class of generative algorithms capable of efficiently learning
arbitrary target distributions from possibly scarce, high-dimensional data and subsequently …

Porous media equations with two weights: smoothing and decay properties of energy solutions via Poincar\'e inequalities

G Grillo, M Muratori, MM Porzio - arXiv preprint arXiv:1204.6159, 2012 - arxiv.org
We study weighted porous media equations on domains $\Omega\subseteq {\mathbb R}^ N
$, either with Dirichlet or with Neumann homogeneous boundary conditions when …

Functional inequalities for heavy tailed distributions and application to isoperimetry

P Cattiaux, N Gozlan, A Guillin, C Roberto - 2010 - projecteuclid.org
This paper is devoted to the study of probability measures with heavy tails. Using the
Lyapunov function approach we prove that such measures satisfy different kind of functional …

[PDF][PDF] Lipschitz regularized gradient flows and latent generative particles

H Gu, P Birmpa, Y Pantazis, L Rey-Bellet… - stat, 2022 - researchgate.net
Lipschitz regularized f-divergences are constructed by imposing a bound on the Lipschitz
constant of the discriminator in the variational representation. These divergences interpolate …

Fractional porous media equations: existence and uniqueness of weak solutions with measure data

G Grillo, M Muratori, F Punzo - Calculus of Variations and Partial …, 2015 - Springer
We prove existence and uniqueness of solutions to a class of porous media equations
driven by the fractional Laplacian when the initial data are positive finite Radon measures …

Entropy-dissipative discretization of nonlinear diffusion equations and discrete Beckner inequalities

C Chainais-Hillairet, A Jüngel… - … Modelling and Numerical …, 2016 - numdam.org
The time decay of fully discrete finite-volume approximations of porous-medium and
fastdiffusion equations with Neumann or periodic boundary conditions is proved in the …

Asymptotic behaviour methods for the Heat Equation. Convergence to the Gaussian

JL Vázquez - arXiv preprint arXiv:1706.10034, 2017 - arxiv.org
In this expository work we discuss the asymptotic behaviour of the solutions of the classical
heat equation posed in the whole Euclidean space. After an introductory review of the main …

On the Bakry-Emery criterion for linear diffusions and weighted porous media equations

J Dolbeault, B Nazaret, G Savaré - 2008 - projecteuclid.org
The goal of this paper is to give a non-local sufficient condition for generalized Poincaré
inequalities which extends the well-known Bakry-Emery condition. Such generalized …

Trends to equilibrium in total variation distance

P Cattiaux, A Guillin - Annales de l'IHP Probabilités et statistiques, 2009 - numdam.org
This paper presents different approaches, based on functional inequalities, to study the
speed of convergence in total variation distance of ergodic diffusion processes with initial …