Neural network augmented inverse problems for PDEs

J Berg, K Nyström - arXiv preprint arXiv:1712.09685, 2017 - arxiv.org
In this paper we show how to augment classical methods for inverse problems with artificial
neural networks. The neural network acts as a prior for the coefficient to be estimated from …

Convergence rate analysis of Galerkin approximation of inverse potential problem

B Jin, X Lu, Q Quan, Z Zhou - Inverse Problems, 2022 - iopscience.iop.org
In this work we analyze the inverse problem of recovering a space-dependent potential
coefficient in an elliptic/parabolic problem from distributed observation. We establish novel …

Matrix coefficient identification in an elliptic equation with the convex energy functional method

M Hinze, TNT Quyen - Inverse problems, 2016 - iopscience.iop.org
In this paper we study the inverse problem of identifying the diffusion matrix in an elliptic
PDE from measurements. The convex energy functional method with Tikhonov …

[HTML][HTML] Neural networks as smooth priors for inverse problems for PDEs

J Berg, K Nyström - Journal of Computational Mathematics and Data …, 2021 - Elsevier
In this paper we discuss the potential of using artificial neural networks as smooth priors in
classical methods for inverse problems for PDEs. Exploring that neural networks are global …

An ADMM-Newton-CNN numerical approach to a TV model for identifying discontinuous diffusion coefficients in elliptic equations: convex case with gradient …

W Tian, X Yuan, H Yue - Inverse Problems, 2021 - iopscience.iop.org
Identifying the discontinuous diffusion coefficient in an elliptic equation with observation data
of the gradient of the solution is an important nonlinear and ill-posed inverse problem …

Finite element analysis for identifying the reaction coefficient in PDE from boundary observations

TNT Quyen - Applied Numerical Mathematics, 2019 - Elsevier
This work is devoted to the nonlinear inverse problem of identifying the reaction coefficient in
an elliptic boundary value problem from single Cauchy data on a part of the boundary. We …

Numerical solution of an elliptic 3-dimensional Cauchy problem by the alternating method and boundary integral equations

I Borachok, R Chapko, BT Johansson - Journal of Inverse and Ill …, 2016 - degruyter.com
We consider the Cauchy problem for the Laplace equation in 3-dimensional doubly-
connected domains, that is the reconstruction of a harmonic function from knowledge of the …

[HTML][HTML] Numerical methods for identifying the diffusion coefficient in a nonlinear elliptic equation

H Jian, ID Kh - Математические заметки СВФУ, 2021 - cyberleninka.ru
Two different approaches for solving a nonlinear coefficient inverse problem are
investigated in this paper. As a classical approach, we use the finite element method to …