743 search results - page 17 / 149 » Approximation Algorithms for Graph Homomorphism Problems |
STOC
1995
ACM
13 years 11 months ago
1995
ACM
We present a unified framework for designing polynomial time approximation schemes (PTASs) for “dense” instances of many NP-hard optimization problems, including maximum cut,...
APPROX
2008
Springer
13 years 9 months ago
2008
Springer
Let H be a graph, and let CH(G) be the number of (subgraph isomorphic) copies of H contained in a graph G. We investigate the fundamental problem of estimating CH(G). Previous res...
CORR
2010
Springer
13 years 7 months ago
2010
Springer
A local algorithm is a distributed algorithm that completes after a constant number of synchronous communication rounds. We present local approximation algorithms for the minimum ...
WADS
2005
Springer
14 years 1 months ago
2005
Springer
Given a forest F = (V, E) and a positive integer D, we consider the problem of finding a minimum number of new edges E such that in the augmented graph H = (V, E∪E ) any pair of...
ALGORITHMICA
2004
13 years 7 months ago
2004
We consider the problem of finding a minimum diameter spanning tree with maximum node degree B in a complete undirected edge-weighted graph. We provide an O( p logB n)-approximatio...