Semi-supervised Learning of Partial Differential Operators and Dynamical Flows
@article{Rotman2022SemisupervisedLO, title={Semi-supervised Learning of Partial Differential Operators and Dynamical Flows}, author={Michael Rotman and Amit Dekel and Ran Ilan Ber and Lior Wolf and Yaron Oz}, journal={ArXiv}, year={2022}, volume={abs/2207.14366} }
The evolution of dynamical systems is generically governed by nonlinear partial differential equations (PDEs), whose solution, in a simulation framework, requires vast amounts of computational resources. In this work, we present a novel method that combines a hyper-network solver with a Fourier Neural Operator architecture. Our method treats time and space separately. As a result, it successfully propagates initial conditions in continuous time steps by employing the general composition…
One Citation
References
SHOWING 1-10 OF 21 REFERENCES
Physics-informed neural networks: A deep learning framework for solving forward and inverse problems involving nonlinear partial differential equations
- Computer ScienceJ. Comput. Phys.
- 2019
Fourier Neural Operator for Parametric Partial Differential Equations
- Computer ScienceICLR
- 2021
This work forms a new neural operator by parameterizing the integral kernel directly in Fourier space, allowing for an expressive and efficient architecture and shows state-of-the-art performance compared to existing neural network methodologies.
Model Reduction and Neural Networks for Parametric PDEs
- Computer Science, MathematicsThe SMAI journal of computational mathematics
- 2021
A neural network approximation which, in principle, is defined on infinite-dimensional spaces and, in practice, is robust to the dimension of finite-dimensional approximations of these spaces required for computation is developed.
Multipole Graph Neural Operator for Parametric Partial Differential Equations
- Computer ScienceNeurIPS
- 2020
A novel multi-graph network framework that captures interaction at all ranges with only linear complexity is proposed, Inspired by the classical multipole methods, and can be evaluated in linear time.
Neural Operator: Learning Maps Between Function Spaces
- Mathematics, Computer ScienceArXiv
- 2021
A generalization of neural networks tailored to learn operators mapping between infinite dimensional function spaces, formulated by composition of a class of linear integral operators and nonlinear activation functions, so that the composed operator can approximate complex nonlinear operators.
Neural Operator: Graph Kernel Network for Partial Differential Equations
- Computer Science, MathematicsICLR 2020
- 2020
The key innovation in this work is that a single set of network parameters, within a carefully designed network architecture, may be used to describe mappings between infinite-dimensional spaces and between different finite-dimensional approximations of those spaces.
DeepONet: Learning nonlinear operators for identifying differential equations based on the universal approximation theorem of operators
- Computer ScienceArXiv
- 2019
This work proposes deep operator networks (DeepONets) to learn operators accurately and efficiently from a relatively small dataset, and demonstrates that DeepONet significantly reduces the generalization error compared to the fully-connected networks.
A physics-informed operator regression framework for extracting data-driven continuum models
- PhysicsArXiv
- 2020
The Random Feature Model for Input-Output Maps between Banach Spaces
- Computer Science, MathematicsSIAM J. Sci. Comput.
- 2021
The random feature model is viewed as a non-intrusive data-driven emulator, a mathematical framework for its interpretation is provided, and its ability to efficiently and accurately approximate the nonlinear parameter-to-solution maps of two prototypical PDEs arising in physical science and engineering applications is demonstrated.
Markov Neural Operators for Learning Chaotic Systems
- Computer Science, MathematicsArXiv
- 2021
Experiments show neural operators are more accurate and stable compared to previous methods on chaotic systems such as the Kuramoto-Sivashinsky and Navier-Stokes equations.