239 search results - page 6 / 48 » Hardness and algorithms for rainbow connection |
APPROX
2009
Springer
15 years 4 months ago
2009
Springer
The (undirected) Node Connectivity Augmentation (NCA) problem is: given a graph J = (V, EJ ) and connectivity requirements {r(u, v) : u, v ∈ V }, find a minimum size set I of n...
STOC
2007
ACM
15 years 9 months ago
2007
ACM
We demonstrate an average-case problem that is as hard as finding (n)-approximate shortest vectors in certain n-dimensional lattices in the worst case, where (n) = O( log n). The...
106
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FSTTCS
2010
Springer
14 years 7 months ago
2010
Springer
In the Connected Dominating Set problem we are given as input a graph G and a positive integer k, and are asked if there is a set S of at most k vertices of G such that S is a dom...
103
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MOBIHOC
2002
ACM
15 years 9 months ago
2002
ACM
A connected dominating set (CDS) for a graph G(V, E) is a subset V of V , such that each node in V - V is adjacent to some node in V , and V induces a connected subgraph. A CDS ha...
120
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OL
2011
14 years 4 months ago
2011
Given a simple undirected graph, the minimum connected dominating set problem is to find a minimum cardinality subset of vertices D inducing a connected subgraph such that each ve...