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An improved delayed-start LPT algorithm for a partition problem on two identical parallel machines
Authors:Christos Koulamas  George J. Kyparisis
Affiliation:Department of Decision Sciences and Information Systems, Florida International University, Miami, FL 33199, USA
Abstract:We propose an off-line delayed-start LPT algorithm that sequences the first (longest) 5 jobs optimally and the remaining jobs according to the LPT principle on two identical parallel machines. We show that this algorithm has a sharper tight worst-case ratio bound than the traditional LPT algorithm for the sum of squares of machine completion times minimization problem.
Keywords:Scheduling   Parallel machines   LPT   Approximation algorithms
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