A tight lower bound for job scheduling with cancellation |
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Authors: | Feifeng Zheng Chung Keung Poon |
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Affiliation: | a School of Management, Xi'an Jiao Tong University, China b Department of Computer Science, The University of Hong Kong, Hong Kong, China c Department of Computer Science, City University of Hong Kong, China |
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Abstract: | The Job Scheduling with Cancellation problem is a variation of classical scheduling problems in which jobs can be cancelled while waiting for execution. In this paper we prove a tight lower bound of 5 for the competitive ratio of any deterministic online algorithm for this problem, for the case where all jobs have the same processing time. |
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Keywords: | On-line algorithms Scheduling Lower bounds |
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