Unbalanced multi-marginal optimal transport

F Beier, J von Lindheim, S Neumayer… - Journal of Mathematical …, 2023 - Springer
Entropy-regularized optimal transport and its multi-marginal generalization have attracted
increasing attention in various applications, in particular due to efficient Sinkhorn-like …

Entropic transfer operators

O Junge, D Matthes, B Schmitzer - Nonlinearity, 2024 - iopscience.iop.org
We propose a new concept for the regularization and discretization of transfer and Koopman
operators in dynamical systems. Our approach is based on the entropically regularized …

Gromov–Wasserstein transfer operators

F Beier - International Conference on Scale Space and …, 2023 - Springer
Gromov–Wasserstein (GW) transport is inherently invariant under isometric transformations
of the data. Having this property in mind, we propose to estimate dynamical systems by …

Consistent spectral approximation of Koopman operators using resolvent compactification

D Giannakis, C Valva - Nonlinearity, 2024 - iopscience.iop.org
Koopman operators and transfer operators represent dynamical systems through their
induced linear action on vector spaces of observables, enabling the use of operator …

Multi-marginal Gromov–Wasserstein transport and barycentres

F Beier, R Beinert, G Steidl - … and Inference: A Journal of the IMA, 2023 - academic.oup.com
Gromov–Wasserstein (GW) distances are combinations of Gromov–Hausdorff and
Wasserstein distances that allow the comparison of two different metric measure spaces …

Tangential Fixpoint Iterations for Gromov-Wasserstein Barycenters

F Beier, R Beinert - arXiv preprint arXiv:2403.08612, 2024 - arxiv.org
The Gromov-Wasserstein (GW) transport problem is a relaxation of classic optimal transport,
which seeks a transport between two measures while preserving their internal geometry …

Transfer Operators from Batches of Unpaired Points via Entropic Transport Kernels

F Beier, H Bi, C Sarrazin, B Schmitzer… - arXiv preprint arXiv …, 2024 - arxiv.org
In this paper, we are concerned with estimating the joint probability of random variables $ X
$ and $ Y $, given $ N $ independent observation blocks $(\boldsymbol {x}^ i,\boldsymbol …

Definition, detection, and tracking of persistent structures in atmospheric flows

J von Lindheim, A Harikrishnan, T Dörffel… - arXiv preprint arXiv …, 2021 - arxiv.org
Long-lived flow patterns in the atmosphere such as weather fronts, mid-latitude blockings or
tropical cyclones often induce extreme weather conditions. As a consequence, their …

[PDF][PDF] Advances in Gromov–Wasserstein Optimal Transport: Linearization, Multi-Marginal Generalization, Barycenters and Transfer Operators

F Beier - 2024 - depositonce.tu-berlin.de
Over the past few decades, optimal transport (OT) has progressively shifted into the focus of
modern applied mathematics. Central to OT are various optimization problems, namely …

[图书][B] Data-Driven Approximation of Transfer Operators: DMD, Perron–Frobenius, and Statistical Learning in Wasserstein Space

A Karimi - 2022 - search.proquest.com
Abstract The Perron–Frobenius and Koopman operators provide natural dual settings to
investigate the dynamics of complex systems. In this thesis we focus on certain pertinent …