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A note on semi-online machine covering

  • T. Ebenlendr
  • , J. Noga
  • , J. Sgall
  • , G.J. Woeginger

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

In the machine cover problem we are given m machines and n jobs to be assigned (scheduled) so that the smallest load of a machine is as large as possible. A semi-online algorithm is given in advance the optimal value of the smallest load for the given instance, and then the jobs are scheduled one by one as they arrive, without any knowledge of the following jobs.We present a deterministic algorithm with competitive ratio 11/6 = 1.834 for machine covering with any number of machines and a lower bound showing that no deterministic algorithm can have a competitive ratio below 43/24 = 1.791.
Original languageEnglish
Title of host publicationApproximation and Online Algorithms (3rd International Workshop, WAOA 2005, Palma de Mallorca, Spain, October 6-7, 2005, Revised selected papers)
EditorsT. Erlebach, G. Persinao
Place of PublicationBerlin
PublisherSpringer
Pages110-118
ISBN (Print)3-540-32207-8
DOIs
Publication statusPublished - 2006

Publication series

NameLecture Notes in Computer Science
Volume3879
ISSN (Print)0302-9743

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