743 search results - page 24 / 149 » Approximation Algorithms for Graph Homomorphism Problems |
WEA
2007
Springer
15 years 5 months ago
2007
Springer
Abstract. The vertex cover problem is a classical NP-complete problem for which the best worst-case approximation ratio is 2− o(1). In this paper, we use a collection of simple g...
CORR
2006
Springer
14 years 11 months ago
2006
Springer
A cycle cover of a graph is a set of cycles such that every vertex is part of exactly one cycle. An L-cycle cover is a cycle cover in which the length of every cycle is in the set ...
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COCOON
2005
Springer
15 years 5 months ago
2005
Springer
For a bounded integer , we wish to color all edges of a graph G so that any two edges within distance have different colors. Such a coloring is called a distance-edge-coloring or ...
TAMC
2009
Springer
15 years 6 months ago
2009
Springer
We investigate a natural combinatorial optimization problem called the Label Cut problem. Given an input graph G with a source s and a sink t, the edges of G are classified into ...
SIAMCOMP
2010
14 years 10 months ago
2010
Let G = (V, E) be a weighted undirected graph having non-negative edge weights. An estimate ˆδ(u, v) of the actual distance δ(u, v) between u, v ∈ V is said to be of stretch t...