A robust fleet-assignment model with hub isolation and short cycles

A robust fleet-assignment model with hub isolation and short cycles

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Article ID: iaor20052236
Country: United States
Volume: 38
Issue: 3
Start Page Number: 357
End Page Number: 368
Publication Date: Aug 2004
Journal: Transportation Science
Authors: , ,
Keywords: programming: integer
Abstract:

Airline decision makers cancel flights in operations because of disruptions. When canceling a flight, they usually cancel a cycle, a sequence of flight that begins and ends at the same airport. Consequently, a fleet assignment and aircraft rotation with many short cycles is frequently less sensitive to a flight cancellation than one with only a few short cycles. In this paper, we determine a lower bound for the number of short cycles using the hub connectivity of a fleet assignment, and we present fleet-assignment models (FAMs) that embed many short cycles and reduce hub connectivity within a solution. We show that solutions to such models perform better in operations than those of traditional FAMs that minimize planned operating cost and passenger spill.

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