3 papers
physics.comp-ph2026
Bayesian Inference: Kernel-Based Model for Surface Temperature Reconstruction in Ice Borehole Thermometry
Kshema Shaju, Thomas Laepple, Peter Zaspel
Reconstructing past surface temperature from shallow ice borehole temperature profiles requires solving an ill-posed inverse problem while quantifying uncertainties arising from me…
math.NA2026
Variational Free Energy Pivot Selection for Pivoted Cholesky
Louise Schaub, Peter Zaspel
Pivoted Cholesky factorizations construct low-rank approximations of symmetric positive definite matrices by sequentially selecting pivots from the residual diagonal. Classical gre…
math.NA2018
Ensemble Kalman Filters for reliability estimation in perfusion inference
Peter Zaspel
We consider the solution of inverse problems in dynamic contrast-enhanced imaging by means of Ensemble Kalman Filters. Our quantity of interest is blood perfusion, i.e. blood flow…