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2002

Crew Assignment via Constraint Programming: Integrating Column Generation and Heuristic Tree Search

11 years 5 months ago
Crew Assignment via Constraint Programming: Integrating Column Generation and Heuristic Tree Search
The Airline Crew Assignment Problem (ACA) consists of assigning lines of work to a set of crew members such that a set of activities is partitioned and the costs for that assignment are minimized. Especially for European airline companies, complex constraints defining the feasibility of a line of work have to be respected. We developed two different algorithms to tackle the large scale optimization problem of Airline Crew Assignment. The first is an application of the Constraint Programming (CP) based Column Generation Framework. The second approach performs a CP based heuristic tree search. We present how both algorithms can be coupled to overcome their inherent weaknesses by integrating methods from Constraint Programming and Operations Research. Numerical results show the superiority of the hybrid algorithm in comparison to CP based tree search and column generation alone.
Meinolf Sellmann, Kyriakos Zervoudakis, Panagiotis
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2002
Where ANOR
Authors Meinolf Sellmann, Kyriakos Zervoudakis, Panagiotis Stamatopoulos, Torsten Fahle
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