Browsing NTNU Open by Author "Gjønnes, Ola"
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Heuristics for the robust vehicle routing problem with time windows
Braaten, Simen V.; Gjønnes, Ola; Hvattum, Lars Magnus; Tirado, Gregorio (Journal article; Peer reviewed, 2017)Uncertainty is frequently present in logistics and transportation, where vehicle routing problems play a crucial role. However, due to the complexity inherent in dealing with uncertainty, most research has been devoted to ... -
Linear Decision Rules for Seasonal Hydropower Planning: Modelling Considerations
Braaten, Simen V.; Gjønnes, Ola; Hjertvik, Knut Jonny; Fleten, Stein-Erik (Journal article; Peer reviewed, 2016)The seasonal hydropower planning problem is presented as a robust optimization model using linear decision rules (LDR). Uncertainty is present in multiple inflow series and the price of electricity. The objective is to ... -
Seasonal hydropower planning using linear decision rules
Braaten, Simen V.; Gjønnes, Ola; Hjertvik, Knut Jonny (Master thesis, 2015)Hydroelectric reservoirs need to be managed carefully in order to maximize their benefits. Existing stochastic optimization approaches for making seasonal reservoir schedules often suffer from very high computing efforts, ...