Benchmarking sparse system identification with low-dimensional chaos

AA Kaptanoglu, L Zhang, ZG Nicolaou, U Fasel… - Nonlinear …, 2023 - Springer
Sparse system identification is the data-driven process of obtaining parsimonious differential
equations that describe the evolution of a dynamical system, balancing model complexity …

Principal component analysis of absorbing state phase transitions

C Muzzi, RS Cortes, DS Bhakuni, A Jelić, A Gambassi… - Physical Review E, 2024 - APS
We perform a principal component analysis (PCA) of two one-dimensional lattice models
belonging to distinct nonequilibrium universality classes—directed bond percolation and …

Weak-form inference for hybrid dynamical systems in ecology

D Messenger, G Dwyer, V Dukic - Journal of the Royal …, 2024 - royalsocietypublishing.org
Species subject to predation and environmental threats commonly exhibit variable periods
of population boom and bust over long timescales. Understanding and predicting such …

Complete inverse design to customize two-dimensional dispersion relation via nonlocal phononic crystals

S Paul, MN Hasan, HC Fu, P Wang - Physical Review B, 2024 - APS
We report a new method to tailor the entire two-dimensional (2D) dispersion relation based
on nonlocal phononic crystals, where beyond-nearest-neighbor (BNN) interactions are used …

[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 …

Direct estimation of parameters in ODE models using WENDy: Weak-form estimation of nonlinear dynamics

DM Bortz, DA Messenger, V Dukic - Bulletin of Mathematical Biology, 2023 - Springer
We introduce the Weak-form Estimation of Nonlinear Dynamics (WENDy) method for
estimating model parameters for non-linear systems of ODEs. Without relying on any …

Mechanistic neural networks for scientific machine learning

A Pervez, F Locatello, E Gavves - arXiv preprint arXiv:2402.13077, 2024 - arxiv.org
This paper presents Mechanistic Neural Networks, a neural network design for machine
learning applications in the sciences. It incorporates a new Mechanistic Block in standard …

Multi-objective SINDy for parameterized model discovery from single transient trajectory data

J Lemus, B Herrmann - Nonlinear Dynamics, 2024 - Springer
The sparse identification of nonlinear dynamics (SINDy) has been established as an
effective technique to produce interpretable models of dynamical systems from time …

Parameter inference from a non-stationary unknown process

KS Owens, BD Fulcher - Chaos: An Interdisciplinary Journal of …, 2024 - pubs.aip.org
Non-stationary systems are found throughout the world, from climate patterns under the
influence of variation in carbon dioxide concentration to brain dynamics driven by ascending …

Shallow Recurrent Decoder for Reduced Order Modeling of Plasma Dynamics

JN Kutz, M Reza, F Faraji, A Knoll - arXiv preprint arXiv:2405.11955, 2024 - arxiv.org
Reduced order models are becoming increasingly important for rendering complex and
multiscale spatio-temporal dynamics computationally tractable. The computational efficiency …