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| 15 September 2005: Mattias defends “The Tail Assignment Problem” |
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| On 13 Sep, Mattias Grönkvist defended his Ph.D. thesis
‘The Tail Assignment Problem’ at Chalmers University
of Technology in Göteborg, Sweden. The faculty opponent
was professor Cynthia Barnhart from the Massachussets
Institute of Technology (MIT). In the thesis, a
new fleet management model is presented, along with
a number of possible solution approaches and example
planning scenarios. The new fleet management model
is the foundation of Carmen’s Tail Assignment product. In what way is the Tail Assignment model you propose unique? –Unlike most previous approaches to fleet assignment and aircraft routing, our model can be used throughout the planning process. It is versatile enough to handle a number of constraint types and optimization criteria, and the thesis demonstrates how it can be used both for commercial and operational planning. What kind of solution methods have you investigated? –To adapt to different planning scenarios, the optimizer must be able to find solutions quickly, and to find close to optimal solutions. To accomplish this, classical mathematical programming techniques have been combined with constraint programming techniques, creating a unique hybrid solution approach. What is your plan for the future? – I will continue to work on improving the Tail Assignment product. I will also work with optimization development for other products. |
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