Scheduling around a small common due date
European Journal of Operational Research p. 237- 242
A set of n jobs has to be scheduled on a single machine which can handle only one job at a time. Each job requires a given positive uninterrupted processing time and has a positive weight. The problem is to find a schedule that minimizes the sum of weighted deviations of the job completion times from a given common due date d, which is smaller than the sum of the processing times. We prove that this problem is NP-hard even if all job weights are equal. In addition, we present a pseudopolynomial algorithm that requires O(n2d) time and O(nd) space.
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Hoogeveen, H., & van de Velde, S. (1991). Scheduling around a small common due date. European Journal of Operational Research, 237–242. doi:10.1016/0377-2217(91)90228-N