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On the Value of Objective Function Adaptation in Online Optimisation

In: Operations Research Proceedings 2007

Author

Listed:
  • Jörn Schönberger

    (University of Bremen)

  • Herbert Kopfer

    (University of Bremen)

Abstract

We analyse a dynamic variant of the vehicle routing problem with soft time windows in which an average punctuality must be guaranteed (e.g. lateness is allowed at some customer sites). The existing objective function does not support both the aspiration for punctuality and least cost so that additional efforts are necessary to achieve an acceptable punctuality level at least possible costs. Within numerical experiments it is shown that static penalties are not adequate in such a situation but that an adaptation of the objective function before its application to the next problem instance supports the search for high quality solutions of the problem.

Suggested Citation

  • Jörn Schönberger & Herbert Kopfer, 2008. "On the Value of Objective Function Adaptation in Online Optimisation," Operations Research Proceedings, in: Jörg Kalcsics & Stefan Nickel (ed.), Operations Research Proceedings 2007, pages 491-496, Springer.
    • Handle: RePEc:spr:oprchp:978-3-540-77903-2_76
    DOI: 10.1007/978-3-540-77903-2_76
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