105 search results - page 2 / 21 » Improved approximation algorithms for minimum-weight vertex ... |
IPL
2007
13 years 5 months ago
2007
Given a metric graph G, we are concerned with finding a spanning tree of G where the maximum weighted degree of its vertices is minimum. In a metric graph (or its spanning tree),...
APPROX
2005
Springer
13 years 11 months ago
2005
Springer
We study the partial vertex cover problem. Given a graph G = (V, E), a weight function w : V → R+ , and an integer s, our goal is to cover all but s edges, by picking a set of v...
WADS
2007
Springer
13 years 11 months ago
2007
Springer
Abstract. We present improved parameterized algorithms for the Feedback Vertex Set problem on both unweighted and weighted graphs. Both algorithms run in time O(5k kn2 ). The algor...
ESA
2007
Springer
13 years 11 months ago
2007
Springer
We study the partial capacitated vertex cover problem (pcvc) in which the input consists of a graph G and a covering requirement L. Each edge e in G is associated with a demand (o...
ICALP
2011
Springer
12 years 9 months ago
2011
Springer
In [13], Erd˝os et al. defined the local chromatic number of a graph as the minimum number of colors that must appear within distance 1 of a vertex. For any ∆ ≥ 2, there are ...