253 search results - page 11 / 51 » Testing subgraphs in directed graphs |
ICALP
2011
Springer
13 years 1 months ago
2011
Springer
We present an O( √ n log n)-approximation algorithm for the problem of finding the sparsest spanner of a given directed graph G on n vertices. A spanner of a graph is a sparse ...
IPL
2006
13 years 9 months ago
2006
We consider a special subgraph of a weighted directed graph: one comprising only the k heaviest edges incoming to each vertex. We show that the maximum weight branching in this su...
ALGORITHMICA
2005
13 years 9 months ago
2005
A cycle cover of a graph is a spanning subgraph each node of which is part of exactly one simple cycle. A k-cycle cover is a cycle cover where each cycle has length at least k. Gi...
AICCSA
2007
IEEE
14 years 4 months ago
2007
IEEE
In the maximum common subgraph (MCS) problem, we are given a pair of graphs and asked to find the largest induced subgraph common to them both. With its plethora of applications,...
SIAMDM
2002
13 years 9 months ago
2002
Let G be a graph on n vertices and suppose that at least n2 edges have to be deleted from it to make it k-colorable. It is shown that in this case most induced subgraphs of G on c...