Reduced basis methods for time-dependent problems

JS Hesthaven, C Pagliantini, G Rozza - Acta Numerica, 2022 - cambridge.org
Numerical simulation of parametrized differential equations is of crucial importance in the
study of real-world phenomena in applied science and engineering. Computational methods …

[HTML][HTML] A graph convolutional autoencoder approach to model order reduction for parametrized PDEs

F Pichi, B Moya, JS Hesthaven - Journal of Computational Physics, 2024 - Elsevier
The present work proposes a framework for nonlinear model order reduction based on a
Graph Convolutional Autoencoder (GCA-ROM). In the reduced order modeling (ROM) …

Crom: Continuous reduced-order modeling of pdes using implicit neural representations

PY Chen, J **ang, DH Cho, Y Chang… - arxiv preprint arxiv …, 2022 - arxiv.org
The long runtime of high-fidelity partial differential equation (PDE) solvers makes them
unsuitable for time-critical applications. We propose to accelerate PDE solvers using …

Neural Galerkin schemes with active learning for high-dimensional evolution equations

J Bruna, B Peherstorfer, E Vanden-Eijnden - Journal of Computational …, 2024 - Elsevier
Deep neural networks have been shown to provide accurate function approximations in high
dimensions. However, fitting network parameters requires informative training data that are …

Breaking the Kolmogorov barrier with nonlinear model reduction

B Peherstorfer - Notices of the American Mathematical Society, 2022 - ams.org
Model reduction is ubiquitous in computational science and engineering. It plays a key role
in making computationally tractable outer-loop applications that require simulating systems …

Symplectic model reduction of Hamiltonian systems on nonlinear manifolds and approximation with weakly symplectic autoencoder

P Buchfink, S Glas, B Haasdonk - SIAM Journal on Scientific Computing, 2023 - SIAM
Classical model reduction techniques project the governing equations onto linear
subspaces of the high-dimensional state-space. For problems with slowly decaying …

[BUCH][B] Advanced reduced order methods and applications in computational fluid dynamics

G Rozza, G Stabile, F Ballarin - 2022 - SIAM
Reduced order modeling is an important and fast-growing research field in computational
science and engineering, motivated by several reasons, of which we mention just a few …

[HTML][HTML] Non-intrusive data-driven reduced-order modeling for time-dependent parametrized problems

J Duan, JS Hesthaven - Journal of Computational Physics, 2024 - Elsevier
Reduced-order models are indispensable for multi-query or real-time problems. However,
there are still many challenges to constructing efficient ROMs for time-dependent …

Rank-adaptive structure-preserving model order reduction of Hamiltonian systems

JS Hesthaven, C Pagliantini… - … Modelling and Numerical …, 2022 - esaim-m2an.org
This work proposes an adaptive structure-preserving model order reduction method for finite-
dimensional parametrized Hamiltonian systems modeling non-dissipative phenomena. To …

A registration method for reduced basis problems using linear optimal transport

T Blickhan - SIAM Journal on Scientific Computing, 2024 - SIAM
We present a registration method for model reduction of parametric partial differential
equations with dominating advection effects and moving features. Registration refers to the …