Abstract
We discuss how the use of Constraint Programming can help speed up a Column Generation process for the Tail Assignment problem. A generalized preprocessing technique based on constraint propagation is presented that can remove up to 98% of the connections of the flight network, much more than methods currently in use. The result is substantial speed-up and increased solution quality for the column generator. We also show how propagation can be used within fixing heuristics, and present a heuristic propagation-based preprocessing method taking cost into consideration. Computational results on data from several airlines is presented.
Research partly funded by Carmen Systems AB, http://www.carmen.se
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© 2002 Springer-Verlag Berlin Heidelberg
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Grönkvist, M. (2002). Using Constraint Propagation to Accelerate Column Generation in Aircraft Scheduling. In: Van Hentenryck, P. (eds) Principles and Practice of Constraint Programming - CP 2002. CP 2002. Lecture Notes in Computer Science, vol 2470. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-46135-3_73
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DOI: https://doi.org/10.1007/3-540-46135-3_73
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