Exploring Physics-Informed Neural Networks for the Generalized Nonlinear Sine-Gordon Equation

Figure 7

3D plots of the PINN point-wise absolute error (the difference of exact and PINN solution) for the dirichlet BCs using (a) adam (b) L-BFGS-B, and (c) combined adam & L-BFGS-B optimization algorithms.

(a)

(b)

(c)