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More Algorithms for All-Pairs Shortest Paths in Weighted Graphs

2010
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SIAM journal on computing (Print)
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In the first part of the paper, we reexamine the all-pairs shortest paths (APSP) problem and present a new algorithm with running time O(n 3 log 3 log n/ log 2 n), which improves all known algorithms for general real-weighted dense graphs. In the second part of the paper, we use fast matrix multiplication to obtain truly subcubic APSP algorithms for a large class of "geometrically weighted" graphs, where the weight of an edge is a function of the coordinates of its vertices. For example, for

doi:10.1137/08071990x
fatcat:g6nnaexymra7zcqynpdkbhaz6q