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» On connectivity of consecutive-d digraphs
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TCS
2008
13 years 5 months ago
Digraph measures: Kelly decompositions, games, and orderings
We consider various well-known, equivalent complexity measures for graphs such as elimination orderings, k-trees and cops and robber games and study their natural translations to ...
Paul Hunter, Stephan Kreutzer
CORR
2004
Springer
83views Education» more  CORR 2004»
13 years 5 months ago
Generating connected acyclic digraphs uniformly at random
We describe a simple algorithm based on a Markov chain process to generate simply connected acyclic directed graphs over a fixed set of vertices. This algorithm is an extension of...
Guy Melançon, Fabrice Philippe
COCO
2007
Springer
93views Algorithms» more  COCO 2007»
13 years 11 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
ICALP
2010
Springer
13 years 9 months ago
Testing 2-Vertex Connectivity and Computing Pairs of Vertex-Disjoint s-t Paths in Digraphs
We present an O(m + n)-time algorithm that tests if a given directed graph is 2-vertex connected, where m is the number of arcs and n is the number of vertices. Based on this resul...
Loukas Georgiadis
DM
2002
73views more  DM 2002»
13 years 5 months ago
On connectivity of consecutive-d digraphs
Ding-Zhu Du, D. Frank Hsu, Hung Quang Ngo, G. W. P...