Blar i Brage HiM på forfatter "Hvattum, Lars Magnus"
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Robust optimization for a maritime inventory routing problem
Agra, Agostinho; Christiansen, Marielle; Hvattum, Lars Magnus; Rodrigues, Filipe (Peer reviewed; Journal article, 2018)We consider a single product maritime inventory routing problem in which the production and consumption rates are constant over the planning horizon. The problem involves a heterogeneous fleet and multiple production and ... -
Scheduling of maintenance tasks and routing of a joint vessel fleet for multiple offshore wind farms
Raknes, Nora Tangen; Ødeskaug, Katrine; Stålhane, Magnus; Hvattum, Lars Magnus (Peer reviewed; Journal article, 2017)Maintenance costs related to offshore wind farms are severely limiting their potential for being profitable. This paper proposes a new mathematical model that considers how maintenance tasks should be scheduled and performed ... -
Speed Optimization in a Maritime Inventory Routing Problem
Eide, Line; Årdal, Gro Cesilie Håhjem (Master thesis, 2018) -
Speed optimization in maritime inventory routing
Evsikova, Nataliia (Master thesis, 2017) -
Stability metrics for a maritime inventory routing problem under sailing time uncertainty
Shaabani, Homayoun; Hvattum, Lars Magnus; Laporte, Gilbert; Hoff, Arild (Arbeidsnotat / Working paper;2023:4, Working paper, 2023) -
Testing the betting market efficiency with the use of heuristics
Brun, Hans Jacob (Master thesis, 2019) -
The value of integrated planning for production, inventory, and routing decisions : a systematic review and meta-analysis
Hrabec, Dušan; Hvattum, Lars Magnus; Hoff, Arild (Peer reviewed; Journal article, 2022)This paper presents a comparison of sequential and integrated planning for the production routing problem, in which production, inventory, and routing decisions must be made. The aim is to estimate the expected value of ... -
Variable neighborhood search for binary integer programming problems
Bentsen, Håkon; Hvattum, Lars Magnus (Peer reviewed; Journal article, 2022)General solvers exist for several types of optimisation problems, with the commercially available solvers for mixed integer programming (MIP) being a prime example. Although binary integer programming (BIP) can be used to ... -
Vessel Fleet Optimization for Maintenance Operations at Offshore Wind Farms under Uncertainty
Stålhane, Magnus; Vefsnmo, Hanne; Halvorsen-Weare, Elin Espeland; Hvattum, Lars Magnus; Nonås, Lars Magne (Peer reviewed; Journal article, 2016)In this paper we consider the problem of determining the optimal fleet size and mix of vessels to support maintenance activities at offshore wind farms. A two-stage stochastic programming model is proposed where uncertainty ... -
Weighted proximity search
Rodrigues, Filipe; Agra, Agostinho; Hvattum, Lars Magnus; Requejo, Cristina (Peer reviewed; Journal article, 2021)Proximity search is an iterative method to solve complex mathematical programming problems. At each iteration, the objective function of the problem at hand is replaced by the Hamming distance function to a given solution, ...