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Hybrid neural-network FEM approximation of diffusion coefficient in elliptic and parabolic Problems

Hybrid neural-network FEM approximation of diffusion coefficient in elliptic and parabolic Problems

Abstract In this work we investigate the numerical identification of the diffusion coefficient in elliptic and parabolic problems using neural networks (NNs). The numerical scheme is based on the standard output least-squares formulation where the Galerkin finite element method (FEM) is employed to approximate the state and NNs act as …