743 search results - page 76 / 149 » Approximation Algorithms for Graph Homomorphism Problems |
JMLR
2010
13 years 2 months ago
2010
It is probably fair to say that exact inference in graphical models is considered a solved problem, at least regarding its computational complexity: it is exponential in the treew...
SWAT
2010
Springer
13 years 6 months ago
2010
Springer
We study the problem of minimizing the diameter of a graph by adding k shortcut edges, for speeding up communication in an existing network design. We develop constant-factor appro...
STOC
2010
ACM
14 years 5 months ago
2010
ACM
We consider the problem of maintaining a large matching or a small vertex cover in a dynamically changing graph. Each update to the graph is either an edge deletion or an edge ins...
WADS
2005
Springer
14 years 1 months ago
2005
Springer
Motivated by optimization problems in sensor coverage, we formulate and study the Minimum-Area Spanning Tree (mast) problem: Given a set P of n points in the plane, find a spannin...
FSTTCS
1993
Springer
14 years 12 hour ago
1993
Springer
We investigate the complexity and approximability of some location problems when two distance values are specified for each pair of potential sites. These problems involve the se...