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Improved Heuristics for the Early/Tardy Scheduling Problem with No Idle Time

  • Jorge M. S. Valente

    ()

    (Faculdade de Economia da Universidade do Porto)

  • Rui A. F. S. Alves

    ()

    (Faculdade de Economia da Universidade do Porto)

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    In this paper we consider the single machine earliness/tardiness scheduling problem with no idle time. We present two new heuristics, a dispatch rule and a greedy procedure, and also consider the best of the existing dispatch rules. Both dispatch rules use a lookahead parameter that had previously been set at a fixed value. We develop functions that map some instance statistics into appropriate values for that parameter. We also consider the use of dominance rules to improve the solutions obtained by the heuristics. The computational results show that the function-based versions of the heuristics outperform their fixed value counterparts and that the use of the dominance rules can indeed improve solution quality with little additional computational effort.

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    File URL: http://www.fep.up.pt/investigacao/workingpapers/wp126.pdf
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    Paper provided by Universidade do Porto, Faculdade de Economia do Porto in its series FEP Working Papers with number 126.

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    Length: 17 pages
    Date of creation: Apr 2003
    Date of revision:
    Handle: RePEc:por:fepwps:126
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    1. Jorge M. S. Valente & Rui A. F. S. Alves, 2003. "Improved Lower Bounds for the Early/Tardy Scheduling Problem with No Idle Time," FEP Working Papers 125, Universidade do Porto, Faculdade de Economia do Porto.
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