method Gaussian belief propagation Iterative method: Linear systems Krylov subspace Nonlinear conjugate gradient method Preconditioning Sparse matrix–vector multiplication References Further reading Gérard Meurant: "Detection and correction of silent errors in the conjugate gradient algorithm", Numerical Algorithms, vol.92 (2023), pp.869-891. url=https://doi.org/10.1007/s11075-022-01380-1 External links Numerical linear algebra Gradient methods Articles with example MATLAB/Octave code