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Sum-Multicoloring on paths

MPG-Autoren

Kovács,  Annamaria
Algorithms and Complexity, MPI for Informatics, Max Planck Society;

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Volltexte (frei zugänglich)

2003-1-015
(beliebiger Volltext), 10KB

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Zitation

Kovács, A.(2003). Sum-Multicoloring on paths (MPI-I-2003-1-015). Saarbrücken: Max-Planck-Institut für Informatik.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-6B18-C
Zusammenfassung
The question, whether the preemptive Sum Multicoloring (pSMC) problem is hard on paths was raised by Halldorsson et al. ["Multi-coloring trees", Information and Computation, 180(2):113-129,2002]. The pSMC problem is a scheduling problem where the pairwise conflicting jobs are represented by a conflict graph, and the time lengths of jobs by integer weights on the nodes. The goal is to schedule the jobs so that the sum of their finishing times is minimized. In the paper we give an O(n^3p) time algorithm for the pSMC problem on paths, where n is the number of nodes and p is the largest time length. The result easily carries over to cycles.