Title: The lockmaster’s problem
Authors: Passchyn, Ward ×
Coene, Sofie
Briskorn, Dirk
Hurink, Johann
Spieksma, Frits
Vanden Berghe, Greet #
Issue Date: 2016
Publisher: Elsevier
Series Title: European Journal of Operational Research vol:251 pages:432-441
Abstract: Inland waterways form a natural network infrastructure with capacity for more traffic. Transportation by ship is widely promoted as it is a reliable, efficient and environmental friendly way of transport. Nevertheless, locks managing the water level on waterways and within harbors sometimes constitute bottlenecks for transportation over water. The lockmaster’s problem concerns the optimal strategy for operating such a lock. In the lockmaster’s problem we are given a lock, a set of upstream-bound ships and another set of ships traveling in the opposite direction. We are given the arrival times of the ships and a constant lockage time;
the goal is to minimize total waiting time of the ships. In this paper, a dynamic programming algorithm is proposed that solves the lockmaster’s problem in polynomial time. This algorithm can also be used to solve a single batching machine scheduling problem more efficiently than the current algorithms from the literature do. We extend the algorithm such that it can be applied in realistic settings, taking into account capacity, ship-dependent handling times, weights and water usage. In addition, we compare the performance of this new exact algorithm with the performance of some (straightforward) heuristics in a computational study.
ISSN: 0377-2217
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Center for Operations Research and Business Statistics (ORSTAT), Leuven
Computer Science Technology TC, Technology Campuses Ghent and Aalst
Technologiecluster Computerwetenschappen
× corresponding author
# (joint) last author

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