138 search results - page 4 / 28 » An Approximation Algorithm for Weighted Weak Vertex Cover Pr... |
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 ...
WEA
2007
Springer
14 years 14 days 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...
ESA
2007
Springer
14 years 16 days 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...
DC
2011
12 years 6 months ago
2011
Abstract This paper gives poly-logarithmic-round, distributed δ-approximation algorithms for covering problems with submodular cost and monotone covering constraints (Submodular-c...
APPROX
2000
Springer
13 years 10 months ago
2000
Springer
Given a graph (directed or undirected) with costs on the edges, and an integer k, we consider the problem of nding a k-node connected spanning subgraph of minimum cost. For the ge...