Several researchers have recently developed new techniques that give fast algorithms for the minimum-cost flow problem. In this paper we combine several of these techniques to yield an algorithm running in O(nm(log log U) log(nC)) time on networks with n vertices, m edges, maximum arc capacity U, and maximum arc cost magnitude C. The major techniques used are the capacity-scaling approach of Edmonds and Karp, the excess-scaling approach of Ahuja and Orlin, the cost-scaling approach of Goldberg and Tarjan, and the dynamic tree data structure of Sleator and Tarjan. For nonsparse graphs with large maximum arc capacity, we obtain a similar but slightly better bound. We also obtain a slightly better bound for the (noncapacitated) transportation problem. In addition, we discuss a capacity-bounding approach to the minimum-cost flow problem. © 1992 The Mathematical Programming Society, Inc.
CITATION STYLE
Ahuja, R. K., Goldberg, A. V., Orlin, J. B., & Tarjan, R. E. (1992). Finding minimum-cost flows by double scaling. Mathematical Programming, 53(1–3), 243–266. https://doi.org/10.1007/BF01585705
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