Maximum st-Flow in Directed Planar Graphs via Shortest Paths
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چکیده
Minimum cuts have been closely related to shortest paths in planar graphs via planar duality – so long as the graphs are undirected. Even maximum flows are closely related to shortest paths for the same reason – so long as the source and the sink are on a common face. In this paper, we give a correspondence between maximum flows and shortest paths via duality in directed planar graphs with no constraints on the source and sink. We believe this a promising avenue for developing algorithms that are more practical than the current asymptotically best algorithms for maximum st-flow.
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تاریخ انتشار 2013