Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/1076
Title: Minimizing total completion time subject to job release dates and preemption penalties
Authors: Liu, Zhaohui
Cheng, T. C. Edwin
Subjects: Preemptive scheduling
Preemption penalty
Setup time
Issue Date: Jul-2004
Publisher: Kluwer Academic Publishers (Springer Netherlands)
Source: Journal of scheduling, July 2004, v. 7, no. 4, p. 313-327.
Abstract: Extensive research has been devoted to preemptive scheduling. However, little attention has been paid to problems where a certain time penalty must be incurred if preemption is allowed. In this paper, we consider the single-machine scheduling problem of minimizing the total completion time subject to job release dates and preemption penalties, where each time a job is started, whether initially or after being preempted, a job-independent setup must take place. The problem is proved to be strongly NP-hard even if the setup time is one unit. We also study a natural extension of a greedy algorithm, which is optimal in the absence of preemption penalty. It is proved that the algorithm has a worst-case performance bound of 25/16, even when the maximum completion time, i.e., makespan, criterion is considered simultaneously.
Rights: Journal of Scheduling © 2004 Kluwer Academic Publishers (Springer). The original publication is available at www.springerlink.com.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/1076
DOI: 10.1023/B:JOSH.0000031424.35504.c4
ISSN: 1094-6136 (print)
1099-1425 (online)
Appears in Collections:LMS Journal/Magazine Articles

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