Discovering a reaction–diffusion model for Alzheimer's disease by combining PINNs with symbolic regression

Z Zhang, Z Zou, E Kuhl, GE Karniadakis - Computer Methods in Applied …, 2024 - Elsevier
Misfolded tau proteins play a critical role in the progression and pathology of Alzheimer's
disease. Recent studies suggest that the spatio-temporal pattern of misfolded tau follows a …

Correcting model misspecification in physics-informed neural networks (PINNs)

Z Zou, X Meng, GE Karniadakis - Journal of Computational Physics, 2024 - Elsevier
Data-driven discovery of governing equations in computational science has emerged as a
new paradigm for obtaining accurate physical models and as a possible alternative to …

Uncertainty quantification for noisy inputs-outputs in physics-informed neural networks and neural operators

Z Zou, X Meng, GE Karniadakis - arXiv preprint arXiv:2311.11262, 2023 - arxiv.org
Uncertainty quantification (UQ) in scientific machine learning (SciML) becomes increasingly
critical as neural networks (NNs) are being widely adopted in addressing complex problems …

A generative modeling framework for inferring families of biomechanical constitutive laws in data-sparse regimes

M Yin, Z Zou, E Zhang, C Cavinato… - Journal of the …, 2023 - Elsevier
Quantifying biomechanical properties of the human vasculature could deepen our
understanding of cardiovascular diseases. Standard nonlinear regression in constitutive …

Leveraging Hamilton-Jacobi PDEs with time-dependent Hamiltonians for continual scientific machine learning

P Chen, T Meng, Z Zou, J Darbon… - 6th Annual Learning …, 2024 - proceedings.mlr.press
We address two major challenges in scientific machine learning (SciML): interpretability and
computational efficiency. We increase the interpretability of certain learning processes by …

Leveraging viscous Hamilton-Jacobi PDEs for uncertainty quantification in scientific machine learning

Z Zou, T Meng, P Chen, J Darbon… - arXiv preprint arXiv …, 2024 - arxiv.org
Uncertainty quantification (UQ) in scientific machine learning (SciML) combines the powerful
predictive power of SciML with methods for quantifying the reliability of the learned models …

Benchmarks for physics-informed data-driven hyperelasticity

V Tac, K Linka, F Sahli-Costabal, E Kuhl… - arXiv preprint arXiv …, 2023 - arxiv.org
Data-driven methods have changed the way we understand and model materials. However,
while providing unmatched flexibility, these methods have limitations such as reduced …

A comprehensive and FAIR comparison between MLP and KAN representations for differential equations and operator networks

K Shukla, JD Toscano, Z Wang, Z Zou… - arXiv preprint arXiv …, 2024 - arxiv.org
Kolmogorov-Arnold Networks (KANs) were recently introduced as an alternative
representation model to MLP. Herein, we employ KANs to construct physics-informed …

Large scale scattering using fast solvers based on neural operators

Z Zou, A Kahana, E Zhang, E Turkel, R Ranade… - arXiv preprint arXiv …, 2024 - arxiv.org
We extend a recently proposed machine-learning-based iterative solver, ie the hybrid
iterative transferable solver (HINTS), to solve the scattering problem described by the …

NeuroSEM: A hybrid framework for simulating multiphysics problems by coupling PINNs and spectral elements

K Shukla, Z Zou, CH Chan, A Pandey, Z Wang… - arXiv preprint arXiv …, 2024 - arxiv.org
Multiphysics problems that are characterized by complex interactions among fluid dynamics,
heat transfer, structural mechanics, and electromagnetics, are inherently challenging due to …