Data-driven soliton mappings for integrable fractional nonlinear wave equations via deep learning with Fourier neural operator
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Abstract (arXiv)
In this paper, we firstly extend the Fourier neural operator (FNO) to discovery the soliton mapping between two function spaces, where one is the fractional-order index space ε|ε∈ (0, 1) in the fractional integrable nonlinear wave equations while another denotes the solitonic solution function space. To be specific, the fractional nonlinear Schr"odinger (fNLS), fractional Korteweg-de Vries (fKdV), fractional modified Korteweg-de Vries (fmKdV) and fractional sine-Gordon (fsineG) equations proposed recently are studied in this paper. We present the train and evaluate progress by recording the train and test loss. To illustrate the accuracies, the data-driven solitons are also compared to the exact solutions. Moreover, we consider the influences of several critical factors (e.g., activation functions containing Relu(x), Sigmoid(x), Swish(x) and xtanh(x), depths of fully connected layer) on the performance of the FNO algorithm. We also use a new activation function, namely, xtanh(x), which is not used in the field of deep learning. The results obtained in this paper may be useful to further understand the neural networks in the fractional integrable nonlinear wave systems and the mappings between two spaces.
Key facts. Cited by 1 paper in the map (data through 7 Oct 2026). Builds on 20 of its 75 references that are in the map. First posted on arXiv 29 Aug 2022.
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8 more
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