 Evaluating the trade-off between the level of customer service and transportation costs in a ship scheduling problemKjetil Fagerholt Maritime Policy & Management, 2000, vol. 27, issue 2, 145-153 Abstract: In many ship scheduling problems, time windows are imposed at the loading and/ or discharging of the cargoes to be lifted. Up until now, all proposed solution methods to ship scheduling problems have treated the time window constraints as hard constraints. By transforming the time window constraints into soft constraints, some of the loading/discharging operations may be performed outside the time windows, penalized by an inconvenience cost for not meeting the time window. The motivation behind introducing soft time windows is that, by allowing controlled time window violations for some customers, it may be possible to obtain better routes and significant reductions in the transportation costs. The purpose of this paper is to evaluate the trade-off between transportation costs and the time window violations. Computational results based on data from a real ship scheduling problem are presented and used as a basis for the evaluation. Date: 2000 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:taf:marpmg:v:27:y:2000:i:2:p:145-153 Ordering information: This journal article can be ordered from Access Statistics for this article Maritime Policy & Management is currently edited by Dr Kevin Li and Heather Leggate McLaughlin More articles in Maritime Policy & Management from Taylor & Francis Journals |
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