Blar i Discussion papers (FOR) på emneord "VDP::Matematikk og Naturvitenskap: 400::Matematikk: 410"

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    • Combined vehicle routing and scheduling with temporal precedence and synchronization constraints 

      Bredström, David; Rönnqvist, Mikael (Discussion paper, Working paper, 2006)
      We present a mathematical programming model for the combined vehicle routing and scheduling problem with time windows and additional temporal constraints. The temporal constraints allow for imposing pairwise synchronization ...

    • A convolution estimator for the density of nonlinear regression observations 

      Støve, Bård; Tjøstheim, Dag (Discussion paper, Working paper, 2007-11)
      The problem of estimating an unknown density function has been widely studied. In this paper we present a convolution estimator for the density of the responses in a nonlinear regression model. The rate of convergence for ...

    • Modeling heterogeneity in trip-distributions with partial information 

      Jörnsten, Kurt; Kleppe, Gisle; Thorsen, Inge; Ubøe, Jan (Discussion paper, Working paper, 2007)
      In this paper we propose a modified gravity model that takes into account that a population generally consists of heterogeneous groups, and we suggest a new statistical test for heterogeneity. We apply our new model to two ...

    • Treating missing values in INAR(1) models 

      Andersson, Jonas; Karlis, Dimitris (Discussion paper, Working paper, 2008-07)
      Time series models for count data have found increased interest in recent days. The existing literature refers to the case of data that have been fully observed. In the present paper, methods for estimating the parameters ...