LIP6 2002/019:
Rapport de Recherche LIP6 /
LIP6
research reports
21 pages - Septembre/September 2002 -
Document en anglais.
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Thème/Team: Systèmes d'Aide à la Décision et à la Formation
Titre français : Le problème d'affectation continue : application à l'ordonnancement préemptif et non préemptif en présence de fonctions de coût non régulières
Titre anglais : The continuous assignment problem and its application to preemptive and non-preemptive scheduling with irregular cost functions
Abstract : It is with the aim of solving scheduling problems with irregular cost functions that this paper focuses on the continuous assignment problem. It consists in partitioning a d dimensional region into subregions of prescribed volumes so that the total cost is minimized. The dual problem of the continuous assignment problem is an unconstrained maximisation of a non-smooth concave function. The preemptive variant of the scheduling problem with irregular cost functions corresponds to the one-dimensional continuous assignment problem and a lower bound for the non-preemptive variant can be derived. It is computationally tested in a branch-and-bound algorithm.
Key-words : Just-in-time scheduling, geometric partitioning, preemptive relaxation
Publications internes LIP6 2002 / LIP6 research reports 2002