Multiscale stochastic dynamical systems have been widely adopted to a variety of scientific and engineering problems due to their capability of depicting complex phenomena in many real-world applications. This work is devoted to investigating the effective dynamics for slow–fast stochastic dynamical systems. Given observation data on a short-term period satisfying some unknown slow–fast stochastic systems, we propose a novel algorithm, including a neural network called Auto-SDE, to learn an invariant slow manifold. Our approach captures the evolutionary nature of a series of time-dependent autoencoder neural networks with the loss constructed from a discretized stochastic differential equation. Our algorithm is also validated to be accurate, stable, and effective through numerical experiments under various evaluation metrics.
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April 2023
Research Article|
April 14 2023
Learning effective dynamics from data-driven stochastic systems
Lingyu Feng
;
Lingyu Feng
(Conceptualization, Formal analysis, Funding acquisition, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
School of Mathematics and Statistics, Huazhong University of Science and Technology
, Wuhan 430074, China
2
Center for Mathematical Science, Huazhong University of Science and Technology
, Wuhan 430074, China
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Ting Gao
;
Ting Gao
a)
(Conceptualization, Funding acquisition, Investigation, Methodology, Supervision, Visualization, Writing – review & editing)
1
School of Mathematics and Statistics, Huazhong University of Science and Technology
, Wuhan 430074, China
2
Center for Mathematical Science, Huazhong University of Science and Technology
, Wuhan 430074, China
a)Author to whom correspondence should be addressed: tgao0716@hust.edu.cn
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Min Dai;
Min Dai
(Conceptualization, Supervision, Writing – review & editing)
3
School of Science, Wuhan University of Technology
, Wuhan 430070, China
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Jinqiao Duan
Jinqiao Duan
(Conceptualization, Writing – review & editing)
4
College of Science, Great Bay University
, Dongguan, Guangdong 523000, China
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a)Author to whom correspondence should be addressed: tgao0716@hust.edu.cn
Chaos 33, 043131 (2023)
Article history
Received:
September 16 2022
Accepted:
March 28 2023
Citation
Lingyu Feng, Ting Gao, Min Dai, Jinqiao Duan; Learning effective dynamics from data-driven stochastic systems. Chaos 1 April 2023; 33 (4): 043131. https://doi.org/10.1063/5.0126667
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