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IACR
2011
104views more  IACR 2011»
13 years 11 months ago
Short Transitive Signatures for Directed Trees
A transitive signature scheme allows to sign a graph in such a way that, given the signatures of edges (a, b) and (b, c), it is possible to compute the signature for the edge (or ...
Philippe Camacho, Alejandro Hevia
WADS
2007
Springer
104views Algorithms» more  WADS 2007»
15 years 5 months ago
Faster Approximation of Distances in Graphs
Let G = (V, E) be an weighted undirected graph on n vertices and m edges, and let dG be its shortest path metric. We present two simple deterministic algorithms for approximating ...
Piotr Berman, Shiva Prasad Kasiviswanathan
ISAAC
2004
Springer
115views Algorithms» more  ISAAC 2004»
15 years 4 months ago
Multicriteria Global Minimum Cuts
We consider two multicriteria versions of the global minimum cut problem in undirected graphs. In the k-criteria setting, each edge of the input graph has k non-negative costs ass...
Amitai Armon, Uri Zwick
WDAG
2009
Springer
103views Algorithms» more  WDAG 2009»
15 years 6 months ago
Distributed Discovery of Large Near-Cliques
Given an undirected graph and 0 ≤ ≤ 1, a set of nodes is called -near clique if all but an fraction of the pairs of nodes in the set have a link between them. In this paper we...
Zvika Brakerski, Boaz Patt-Shamir
COCO
2007
Springer
93views Algorithms» more  COCO 2007»
15 years 5 months ago
S-T Connectivity on Digraphs with a Known Stationary Distribution
We present a deterministic logspace algorithm for solving S-T Connectivity on directed graphs if (i) we are given a stationary distribution of the random walk on the graph in whic...
Kai-Min Chung, Omer Reingold, Salil P. Vadhan