Browsing Bergen Open Research Archive by Author "Skaug, Hans Julius"

Now showing items 1-8 of 8

    • Consideration of measurement errors for the Norwegian common minke whale (Balaenoptera acutorostrata acutorostrata) surveys 

      Solvang, Hiroko Kato; Skaug, Hans Julius; Øien, Nils Inge (Journal article; Peer reviewed, 2021)
      A discrete measurement error model for radial distance and angle to detected objects in line transect surveys is considered. This approach directly quantifies the effect of measurement error on the estimated effective strip ...

    • Considering sampling bias in close-kin mark–recapture abundance estimates of Atlantic salmon 

      Wacker, Sebastian; Skaug, Hans Julius; Forseth, Torbjørn; Solem, Øyvind; Ulvan, Eva Marita; Fiske, Peder; Karlsson, Sten (Journal article; Peer reviewed, 2021)
      Genetic methods for the estimation of population size can be powerful alternatives to conventional methods. Close-kin mark–recapture (CKMR) is based on the principles of conventional mark–recapture, but instead of being ...

    • Epistemic uncertainty quantification in deep learning classification by the Delta method 

      Nilsen, Geir Kjetil; Munthe-Kaas, Antonella Zanna; Skaug, Hans Julius; Brun, Morten (Journal article; Peer reviewed, 2022)
      The Delta method is a classical procedure for quantifying epistemic uncertainty in statistical models, but its direct application to deep neural networks is prevented by the large number of parameters . We propose a low ...

    • Evaluating the suitability of close-kin mark-recapture as a demographic modelling tool for a critically endangered elasmobranch population 

      Delaval, Aurelien Nicolas; Bendall, Victoria; Hetherington, Stuart; Skaug, Hans Julius; Frost, Michelle; Jones, Catherine; Noble, Leslie Robert (Journal article; Peer reviewed, 2022)
      Estimating the demographic parameters of contemporary populations is essential to the success of elasmobranch conservation programmes, and to understanding their recent evolutionary history. For benthic elasmobranchs such ...

    • Report of the NAMMCO-ICES Workshop on Seal Modelling (WKSEALS 2020) 

      Smout, Sophie; Murray, Kimberly; Aarts, Geert; Biuw, Martin; Brasseur, Sophie; Buren, Alejandro; Empacher, Fanny; Frie, Anne Kirstine Højholt; Grecian, James; Hammill, Mike; Mikkelsen, Bjarni; Mosnier, Arnaud; Rosing-Asvid, Aqqalu; Russell, Debbie; Skaug, Hans Julius; Stenson, Garry; Thomas, Len; Ver Hoef, Jay; Witting, Lars; Zabavnikov, Vladimir; Øigård, Tor Arne; Fernandez, Ruth; Wickson, Fern (Journal article; Peer reviewed, 2021)
      To support sustainable management of apex predator populations, it is important to estimate population size and understand the drivers of population trends to anticipate the consequences of human decisions. Robust population ...

    • The Sibling Distribution for Multivariate Life Time Data 

      Helgøy, Ingvild Margrethe; Skaug, Hans Julius (Journal article; Peer reviewed, 2022)
      A flexible class of multivariate distributions for continuous lifetimes is proposed. The distribution is defined in terms of the age-at-death of m siblings. The expression for the joint density is derived using classical ...

    • A TMB Approach to Study Spatial Variation in Weather-Generated Claims in Insurance 

      Thorsen, Ingrid Sandvig; Støve, Bård; Skaug, Hans Julius (Journal article; Peer reviewed, 2023)
      In this paper, we use TMB to study spatial variation in weather-generated claims in insurance. Our motivation is twofold. By comparing with INLA, we first find that TMB is a robust and efficient approach to deal with spatial ...

    • Variation in use of Caesarean section in Norway: An application of spatio-temporal Gaussian random fields 

      Mannseth, Janne; Berentsen, Geir Drage; Skaug, Hans Julius; Lie, Rolv T.; Moster, Dag (Journal article; Peer reviewed, 2021)
      Aims: Caesarean section (CS) is a medical intervention performed in Norway when a surgical delivery is considered more beneficial than a vaginal. Because deliveries with higher risk are centralized to larger hospitals, ...