Williams (APSP on Dense Directed Graphs with Arbitrary Weights All-Pairs Shortest Paths (APSP))

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Time Complexity

$O(n^{3} /{2}^{(\log n)^{0.5}})$

Space Complexity

$O(n^{2})$ words

(Derived: discussed with Ryan, uses an auxiliary $V \times V$ matrix, and the space required for the matrix multiplication of $V \times d$ and $d \times V$ matrices is also $O(V^2)$)

Description

Approximate?

Exact

Randomized?

No, deterministic

Model of Computation

Word RAM

Year

2014

Reference

https://dl.acm.org/citation.cfm?id=2591811