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arXiv · 2303.17496

Data-driven multiscale modeling for correcting dynamical systems

Abstract

We propose a multiscale approach for predicting quantities in dynamical systems which is explicitly structured to extract information in both fine-to-coarse and coarse-to-fine directions. We envision this method being generally applicable to problems with significant self-similarity or in which the prediction task is challenging and where stability of a learned model's impact on the target dynamical system is important. We evaluate our approach on a climate subgrid parameterization task in which our multiscale networks correct chaotic underlying models to reflect the contributions of unresolved, fine-scale dynamics.

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Karl Otness, Laure Zanna, Joan Bruna. 2023-03-24. Data-driven multiscale modeling for correcting dynamical systems. https://doi.org/10.1088/2632-2153%2Fae1a36

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