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Data-Driven Modeling and Prediction of Non-Linearizable Dynamics via Spectral Submanifolds. (arXiv:2201.04976v1 [math.DS])
Jan. 14, 2022, 2:10 a.m. | Mattia Cenedese, Joar Axås, Bastian Bäuerlein, Kerstin Avila, George Haller
cs.LG updates on arXiv.org arxiv.org
We develop a methodology to construct low-dimensional predictive models from
data sets representing essentially nonlinear (or non-linearizable) dynamical
systems with a hyperbolic linear part that are subject to external forcing with
finitely many frequencies. Our data-driven, sparse, nonlinear models are
obtained as extended normal forms of the reduced dynamics on low-dimensional,
attracting spectral submanifolds (SSMs) of the dynamical system. We illustrate
the power of data-driven SSM reduction on high-dimensional numerical data sets
and experimental measurements involving beam oscillations, vortex shedding …
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