Learning from small data sets: Patch‐based regularizers in inverse problems for image reconstruction

M Piening, F Altekrüger, J Hertrich… - GAMM …, 2024 - Wiley Online Library
The solution of inverse problems is of fundamental interest in medical and astronomical
imaging, geophysics as well as engineering and life sciences. Recent advances were made …

Conditional wasserstein distances with applications in bayesian ot flow matching

J Chemseddine, P Hagemann, G Steidl… - arxiv preprint arxiv …, 2024 - arxiv.org
In inverse problems, many conditional generative models approximate the posterior
measure by minimizing a distance between the joint measure and its learned approximation …

Posterior sampling based on gradient flows of the MMD with negative distance kernel

P Hagemann, J Hertrich, F Altekrüger, R Beinert… - arxiv preprint arxiv …, 2023 - arxiv.org
We propose conditional flows of the maximum mean discrepancy (MMD) with the negative
distance kernel for posterior sampling and conditional generative modeling. This MMD …

Adversarial robustness of amortized Bayesian inference

M Gloeckler, M Deistler, JH Macke - arxiv preprint arxiv:2305.14984, 2023 - arxiv.org
Bayesian inference usually requires running potentially costly inference procedures
separately for every new observation. In contrast, the idea of amortized Bayesian inference …

Robustness and exploration of variational and machine learning approaches to inverse problems: An overview

A Auras, KV Gandikota, H Droege… - GAMM …, 2024 - Wiley Online Library
This paper provides an overview of current approaches for solving inverse problems in
imaging using variational methods and machine learning. A special focus lies on point …

NF-ULA: Normalizing Flow-Based Unadjusted Langevin Algorithm for Imaging Inverse Problems

Z Cai, J Tang, S Mukherjee, J Li, CB Schönlieb… - SIAM Journal on Imaging …, 2024 - SIAM
Bayesian methods for solving inverse problems are a powerful alternative to classical
methods since the Bayesian approach offers the ability to quantify the uncertainty in the …

NF-ULA: Langevin Monte Carlo with normalizing flow prior for imaging inverse problems

Z Cai, J Tang, S Mukherjee, J Li, CB Schönlieb… - arxiv preprint arxiv …, 2023 - arxiv.org
Bayesian methods for solving inverse problems are a powerful alternative to classical
methods since the Bayesian approach offers the ability to quantify the uncertainty in the …

Y-Diagonal Couplings: Approximating Posteriors with Conditional Wasserstein Distances

J Chemseddine, P Hagemann, C Wald - arxiv preprint arxiv:2310.13433, 2023 - arxiv.org
In inverse problems, many conditional generative models approximate the posterior
measure by minimizing a distance between the joint measure and its learned approximation …

Learning conditional distributions on continuous spaces

C Bénézet, Z Cheng, S Jaimungal - arxiv preprint arxiv:2406.09375, 2024 - arxiv.org
We investigate sample-based learning of conditional distributions on multi-dimensional unit
boxes, allowing for different dimensions of the feature and target spaces. Our approach …

A Likelihood Based Approach to Distribution Regression Using Conditional Deep Generative Models

S Kumar, Y Yang, L Lin - arxiv preprint arxiv:2410.02025, 2024 - arxiv.org
In this work, we explore the theoretical properties of conditional deep generative models
under the statistical framework of distribution regression where the response variable lies in …