A hybrid optimization that solves the network's linear output layer by least squares inside each gradient step accelerates and stabilizes PINN training for the scattered Helmholtz equation.
M., Uriarte, C., and Pardo, D
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Least-Squares-Embedded Optimization for Accelerated Convergence of PINNs in Acoustic Wavefield Simulations
A hybrid optimization that solves the network's linear output layer by least squares inside each gradient step accelerates and stabilizes PINN training for the scattered Helmholtz equation.