Geir-Arne Fuglstad

Flexible covariance structures on metric graphs

Whittle-Mat\'ern (WM) Gaussian random fields (GRFs) are defined as solutions of stochastic partial differential equations (SPDEs) and provide a natural analog of Mat\'ern GRFs on non-Euclidean geometry where the Mat\'ern covariance function is not valid. In particular, WM GRFs on metric graphs have been an active area...