no code implementations • 9 Jan 2024 • Georg Gottwald, Fengyi Li, Youssef Marzouk, Sebastian Reich
Diffusion maps are used to approximate the drift term from the available training samples, which is then implemented in a discrete-time Langevin sampler to generate new samples.
no code implementations • 5 Oct 2023 • Yifan Chen, Daniel Zhengyu Huang, Jiaoyang Huang, Sebastian Reich, Andrew M Stuart
Our third contribution is to study, and develop efficient algorithms based on Gaussian approximations of the gradient flows; this leads to an alternative to particle methods.
no code implementations • 9 Sep 2023 • Diksha Bhandari, Jakiw Pidstrigach, Sebastian Reich
We consider the problem of performing Bayesian inference for logistic regression using appropriate extensions of the ensemble Kalman filter.
1 code implementation • 21 Feb 2023 • Yifan Chen, Daniel Zhengyu Huang, Jiaoyang Huang, Sebastian Reich, Andrew M. Stuart
The flow in the Gaussian space may be understood as a Gaussian approximation of the flow.
no code implementations • 20 Feb 2023 • Jakiw Pidstrigach, Youssef Marzouk, Sebastian Reich, Sven Wang
For image distributions, these guidelines are in line with the canonical choices currently made for diffusion models.
no code implementations • 8 Aug 2021 • Georg A. Gottwald, Sebastian Reich
We present a supervised learning method to learn the propagator map of a dynamical system from partial and noisy observations.
2 code implementations • 10 Jun 2021 • Felix Dietrich, Alexei Makeev, George Kevrekidis, Nikolaos Evangelou, Tom Bertalan, Sebastian Reich, Ioannis G. Kevrekidis
We identify effective stochastic differential equations (SDE) for coarse observables of fine-grained particle- or agent-based simulations; these SDE then provide useful coarse surrogate models of the fine scale dynamics.
no code implementations • 14 Jul 2020 • Georg A. Gottwald, Sebastian Reich
The machine-learning model is learned sequentially by incorporating incoming noisy observations.
no code implementations • 3 Jun 2020 • Caroline L. Wormell, Sebastian Reich
We also introduce an alternative normalisation for diffusion maps based on Sinkhorn weights.
1 code implementation • 9 Apr 2020 • Noa Malem-Shinitski, Manfred Opper, Sebastian Reich, Lisa Schwetlick, Stefan A. Seelig, Ralf Engbert
Thus, the main contribution of our modeling approach is two--fold; first, we propose a new model for saccade generation in scene viewing.
Neurons and Cognition