
doi: 10.1002/net.22001
handle: 1721.1/134021
AbstractIn 2013, Orlin proved that the max flow problem could be solved in O(nm) time. His algorithm ran in O(nm + m1.94) time, which was the fastest for graphs with fewer than n1.06 arcs. If the graph was not sufficiently sparse, the fastest running time was an algorithm due to King, Rao, and Tarjan. We describe a new variant of the excess scaling algorithm for the max flow problem whose running time strictly dominates the running time of the algorithm by King et al. For graphs in which m = O(nlog n), the running time of our algorithm dominates that of King et al. by a factor of O(loglog n). Moreover, our algorithm achieves this improved performance without reliance on dynamic trees.
scaling algorithms, network flows, strongly polynomial, flow-return forest, maximum flows, contraction, Flows in graphs
scaling algorithms, network flows, strongly polynomial, flow-return forest, maximum flows, contraction, Flows in graphs
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