A Column Generation Approach for Large-Scale Aircrew Rostering Problems

Authors:
Gerard Cornuejols;Milind Dawande;Michel Gamache;Francois Soumis;Gerald Marquis;Jacques Desrosiers
Affiliations:
-;-;-;-;-;-
Venue:
Operations Research
Year:
1999

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Abstract

This article describes a method for solving the crew rostering problem in air transportation. This problem consists of constructing personalized schedules that assign pairings, days off, and other activities to airline crew members. A generalized set partitioning model and a method using column generation have been used. This method has been adapted in a number of ways to take advantage of the nature of the problem and to accelerate solution. Numerical tests on problems from Air France have demonstrated that this method is capable of solving very large scale problems with thousands of constraints and hundreds of subproblems. The tests have also shown that these adaptations are capable of reducing solution time by a factor of about a thousand. Finally, results from this method are compared with those obtained with the method currently used at Air France.