Abstract
This paper considers a reclaimer scheduling problem in which one has to collect bulk material from stockpiles in the quay in such a way that the time used is minimized. When reclaimers are allowed to work on the same stockpile simultaneously, a fully polynomial time approximation scheme (FPTAS) is designed. Further, we present a 2-approximation algorithm in the case that any stockpile can be handled by only one reclaimer at a time. When the number of reclaimers is two, we give a 3/2-approximation algorithm. Numerical experiments show that the algorithms perform much better than our worst case analysis guarantees.
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Supported by the National Natural Science Foundation of China (No. 11371137 and No.71431004).
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Wang, C., Lu, Xw. & Sitters, R. Scheduling Reclaimer Operations in the Stockyard to Minimize Makespan. Acta Math. Appl. Sin. Engl. Ser. 34, 597–609 (2018). https://doi.org/10.1007/s10255-018-0758-6
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DOI: https://doi.org/10.1007/s10255-018-0758-6