1 code implementation • 28 Jul 2023 • Lorenz Richter, Leon Sallandt, Nikolas Nüsken
The numerical approximation of partial differential equations (PDEs) poses formidable challenges in high dimensions since classical grid-based methods suffer from the so-called curse of dimensionality.
1 code implementation • 3 Jul 2023 • Francisco Vargas, Shreyas Padhy, Denis Blessing, Nikolas Nüsken
Connecting optimal transport and variational inference, we present a principled and systematic framework for sampling and generative modelling centred around divergences on path space.
no code implementations • 7 Dec 2021 • Nikolas Nüsken, Lorenz Richter
Solving high-dimensional partial differential equations is a recurrent challenge in economics, science and engineering.
no code implementations • pproximateinference AABI Symposium 2022 • Francisco Vargas, Andrius Ovsianas, David Fernandes, Mark Girolami, Neil D. Lawrence, Nikolas Nüsken
In this work we explore a new framework for approximate Bayesian inference in large datasets based on stochastic control (i. e. Schr\"odinger bridges).
no code implementations • 25 Feb 2021 • Nikolas Nüsken, D. R. Michiel Renger
Stein variational gradient descent (SVGD) refers to a class of methods for Bayesian inference based on interacting particle systems.
1 code implementation • 23 Feb 2021 • Lorenz Richter, Leon Sallandt, Nikolas Nüsken
High-dimensional partial differential equations (PDEs) are ubiquitous in economics, science and engineering.
1 code implementation • NeurIPS 2020 • Lorenz Richter, Ayman Boustati, Nikolas Nüsken, Francisco J. R. Ruiz, Ömer Deniz Akyildiz
We analyse the properties of an unbiased gradient estimator of the ELBO for variational inference, based on the score function method with leave-one-out control variates.
no code implementations • 11 May 2020 • Nikolas Nüsken, Lorenz Richter
Optimal control of diffusion processes is intimately connected to the problem of solving certain Hamilton-Jacobi-Bellman equations.