• Corpus ID: 239009575

Is it time to swish? Comparing activation functions in solving the Helmholtz equation using physics-informed neural networks

@inproceedings{AlSafwan2021IsIT,
title={Is it time to swish? Comparing activation functions in solving the Helmholtz equation using physics-informed neural networks},
author={Ali Al-Safwan and Chao Song and Umair bin Waheed},
year={2021}
}
Solving the wave equation numerically constitutes the majority of the computational cost for applications like seismic imaging and full waveform inversion. An alternative approach is to solve the frequency domain Helmholtz equation, since it offers a reduction in dimensionality as it can be solved per frequency. However, computational challenges with the classical Helmholtz solvers such as the need to invert a large stiffness matrix can make these approaches computationally infeasible for large…

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