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- W2103444054 abstract "This paper shows how to compute $O(sqrt{log n})$-approximations to the Sparsest Cut and Balanced Separator problems in $tilde{O}(n^2)$ time, thus improving upon the recent algorithm of Arora, Rao, and Vazirani [Proceedings of the 36th Annual ACM Symposium on Theory of Computing, 2004, pp. 222–231]. Their algorithm uses semidefinite programming and requires $tilde{O}(n^{9.5})$ time. Our algorithm relies on efficiently finding expander flows in the graph and does not solve semidefinite programs. The existence of expander flows was also established by Arora, Rao, and Vazirani [Proceedings of the 36th Annual ACM Symposium on Theory of Computing, 2004, pp. 222–231]." @default.
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- W2103444054 date "2010-01-01" @default.
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- W2103444054 title "$O(sqrt{logn})$ Approximation to SPARSEST CUT in $tilde{O}(n^2)$ Time" @default.
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- W2103444054 doi "https://doi.org/10.1137/080731049" @default.
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