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A tight lower bound for job scheduling with cancellation
Authors:Feifeng Zheng  Chung Keung Poon
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
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.
Keywords:On-line algorithms  Scheduling  Lower bounds
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