Multi-Preconditioned LBFGS for Training Finite-Basis PINNs

Marc Salvadó-Benasco, Aymane Kssim, Alexander Heinlein +3

A multi-preconditioned LBFGS (MP-LBFGS) algorithm is introduced for training finite-basis physics-informed neural networks (FBPINNs). The algorithm is motivated by the nonlinear ad…