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Cited by 549

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PDE-Net 2.0: Learning PDEs from data with a numeric-symbolic hybrid deep network

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Long, Zichao, Lu, Yiping, Dong, Bin·2019·Journal of Computational Physics

Abstract

Abstract Partial differential equations (PDEs) are commonly derived based on empirical observations. However, recent advances of technology enable us to collect and store massive amount of data, which offers new opportunities for data-driven discovery of PDEs. In this paper, we propose a new deep neural network, called PDE-Net 2.0, to discover (time-dependent) PDEs from observed dynamic data with minor prior knowledge on the underlying mechanism that drives the dynamics. The design of PDE-Net 2.0 is based on our earlier work [1] where the original version of PDE-Net was proposed. PDE-Net 2.0 is a combination of numerical approximation of differential operators by convolutions and a symbolic multi-layer neural network for model recovery. Comparing with existing approaches, PDE-Net 2.0 has the most flexibility and expressive power by learning both differential operators and the nonlinear response function of the underlying PDE model. Numerical experiments show that the PDE-Net 2.0 has the potential to uncover the hidden PDE of the observed dynamics, and predict the dynamical behavior for a relatively long time, even in a noisy environment.

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Metadata

Authors
Long, Z., Lu, Y., & Dong, B.
Venue
Journal of Computational Physics
Publisher
Elsevier BV
Published
2019-12
Volume
399
Pages
108925
ISSN
0021-9991 (ISSN-L)
OpenAlex
W2903660960
Cited by
549
References
41
FWCI
25.68
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: PDE-Net 2.0: Learning PDEs from data with a numeric-symbolic hybrid deep network. https://app.cochat.ai/papers/10.1016/j.jcp.2019.108925
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Long, Z., Lu, Y., & Dong, B. (2019). PDE-Net 2.0: Learning PDEs from data with a numeric-symbolic hybrid deep network. Journal of Computational Physics. https://doi.org/10.1016/j.jcp.2019.108925

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