Lasdi: Parametric latent space dynamics identification

WD Fries, X He, Y Choi - Computer Methods in Applied Mechanics and …, 2022 - Elsevier
Enabling fast and accurate physical simulations with data has become an important area of
computational physics to aid in inverse problems, design-optimization, uncertainty …

A fast and accurate domain decomposition nonlinear manifold reduced order model

AN Diaz, Y Choi, M Heinkenschloss - Computer Methods in Applied …, 2024 - Elsevier
This paper integrates nonlinear-manifold reduced order models (NM-ROMs) with domain
decomposition (DD). NM-ROMs approximate the full order model (FOM) state in a nonlinear …

Gplasdi: Gaussian process-based interpretable latent space dynamics identification through deep autoencoder

C Bonneville, Y Choi, D Ghosh, JL Belof - Computer Methods in Applied …, 2024 - Elsevier
Numerically solving partial differential equations (PDEs) can be challenging and
computationally expensive. This has led to the development of reduced-order models …

[HTML][HTML] Advanced data analysis in inertial confinement fusion and high energy density physics

PF Knapp, WE Lewis - Review of Scientific Instruments, 2023 - pubs.aip.org
Bayesian analysis enables flexible and rigorous definition of statistical model assumptions
with well-characterized propagation of uncertainties and resulting inferences for single-shot …

[HTML][HTML] Weak-form latent space dynamics identification

A Tran, X He, DA Messenger, Y Choi… - Computer Methods in …, 2024 - Elsevier
Recent work in data-driven modeling has demonstrated that a weak formulation of model
equations enhances the noise robustness of a wide range of computational methods. In this …

gLaSDI: Parametric physics-informed greedy latent space dynamics identification

X He, Y Choi, WD Fries, JL Belof, JS Chen - Journal of Computational …, 2023 - Elsevier
A parametric adaptive physics-informed greedy Latent Space Dynamics Identification
(gLaSDI) method is proposed for accurate, efficient, and robust data-driven reduced-order …

S-OPT: A points selection algorithm for hyper-reduction in reduced order models

JT Lauzon, SW Cheung, Y Shin, Y Choi… - SIAM Journal on …, 2024 - SIAM
While projection-based reduced order models can reduce the dimension of full order
solutions, the resulting reduced models may still contain terms that scale with the full order …

tLaSDI: Thermodynamics-informed latent space dynamics identification

JSR Park, SW Cheung, Y Choi, Y Shin - Computer Methods in Applied …, 2024 - Elsevier
We propose a latent space dynamics identification method, namely tLaSDI, that embeds the
first and second principles of thermodynamics. The latent variables are learned through an …

Train small, model big: Scalable physics simulators via reduced order modeling and domain decomposition

SW Chung, Y Choi, P Roy, T Moore, T Roy… - Computer Methods in …, 2024 - Elsevier
Numerous cutting-edge scientific technologies originate at the laboratory scale, but
transitioning them to practical industry applications is a formidable challenge. Traditional …