Browsing NORCE vitenarkiv by Author "Aanonsen, Sigurd Ivar"

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    • Bayesian model evaluation for multiple scenarios 

      Aanonsen, Sigurd Ivar; Fossum, Kristian; Mannseth, Trond (Peer reviewed; Journal article, 2023)
      Traditional uncertainty analysis for subsurface models is typically based on a single dynamic model with a number of uncertain parameters. Improved and more robust forecasting can be obtained by combining several models ...

    • Calculating Bayesian model evidence for porous-media flow using a multilevel estimator 

      Mannseth, Trond; Fossum, Kristian; Aanonsen, Sigurd Ivar (Peer reviewed; Journal article, 2024)
      We consider calculation of the Bayesian model evidence, which is an essential component in realistic uncertainty quantification. The main motivation is large-scale porous-media-flow problems, where plain Monte-Carlo (MC) ...