Abstract
The scheduling problem 1|pmtn, r j|Σw jU j calls forn jobs with arbitrary release dates and due dates to be preemptively scheduled for processing by a single machine, with the objective of minimizing the sum of the weights of the late jobs. A dynamic programming algorithm for this problem is described. Time and space bounds for the algorithm are, respectively,O(nk 2W 2) andO(k 2W), wherek is the number of distinct release dates andW is the sum of the integer job weights. Thus, for the problem 1|pmtn, r j|ΣU j, in which the objective is simply to minimize the number of late jobs, the pseudopolynomial time bound becomes polynomial, i.e.O(n 3k 2).
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Lawler, E.L. A dynamic programming algorithm for preemptive scheduling of a single machine to minimize the number of late jobs. Ann Oper Res 26, 125–133 (1990). https://doi.org/10.1007/BF02248588
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DOI: https://doi.org/10.1007/BF02248588