Complexity and approximability of scheduling resumable proportionally deteriorating jobs

A set of independent, resumable and proportionally deteriorating jobs is to be executed on a single machine. The machine is not continuously available for processing but the number of non-availability periods, the start time and end time of each period are known in advance. The criterion of schedule...

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Vydáno v:European journal of operational research Ročník 200; číslo 1; s. 305 - 308
Hlavní autoři: Gawiejnowicz, Stanisław, Kononov, Alexander
Médium: Journal Article
Jazyk:angličtina
Vydáno: Amsterdam Elsevier B.V 2010
Elsevier
Elsevier Sequoia S.A
Edice:European Journal of Operational Research
Témata:
ISSN:0377-2217, 1872-6860
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Shrnutí:A set of independent, resumable and proportionally deteriorating jobs is to be executed on a single machine. The machine is not continuously available for processing but the number of non-availability periods, the start time and end time of each period are known in advance. The criterion of schedule optimality is the maximum completion time. It is proved that the decision version of the problem with a single non-availability period is ordinarily NP -complete. It is also proved that for the problem with a single non-availability period there exists a fully polynomial-time approximation scheme. Finally, it is proved that for the problem with two or more non-availability periods there does not exist a polynomial-time approximation algorithm with a constant worst-case ratio, unless P = NP .
Bibliografie:SourceType-Scholarly Journals-1
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content type line 14
ISSN:0377-2217
1872-6860
DOI:10.1016/j.ejor.2008.12.014