Scheduling equal-length jobs with arbitrary sizes on uniform parallel batch machines

Abstract: We consider the problem of scheduling jobs with equal lengths and arbitrary sizes on uniform parallel batch machines with different capacities. Each machine can only process the jobs whose sizes are not larger than its capacity. Several jobs can be processed as a batch simultaneously on a machine, as long as their total size does not exceed the machine’s capacity. The objective is to minimize makespan. Under a divisibility constraint, we obtain two efficient exact algorithms. For the general problem, we obtain an efficient 2-approximation algorithm. Previous work has shown that the problem cannot be approximated to within an approximation ratio better than 2, unless P = NP, even when all machines have identical speeds and capacities.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Scheduling equal-length jobs with arbitrary sizes on uniform parallel batch machines ; volume:21 ; number:1 ; year:2023 ; extent:11
Open mathematics ; 21, Heft 1 (2023) (gesamt 11)

Urheber
Xin, Xiao
Khan, Muhammad Ijaz
Li, Shuguang

DOI
10.1515/math-2022-0562
URN
urn:nbn:de:101:1-2023022813190175273847
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
14.08.2025, 11:04 MESZ

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Beteiligte

  • Xin, Xiao
  • Khan, Muhammad Ijaz
  • Li, Shuguang

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