219 search results - page 15 / 44 » A Better Approximation Ratio for the Vertex Cover Problem |
DAM
2011
13 years 2 months ago
2011
We study various optimization problems in t-subtree graphs, the intersection graphs of tsubtrees, where a t-subtree is the union of t disjoint subtrees of some tree. This graph cl...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
In this paper, we consider approximability issues of the following four problems: triangle packing, full sibling reconstruction, maximum profit coverage and 2-coverage. All of th...
TCS
2008
13 years 7 months ago
2008
The edge dominating set (EDS) and edge cover (EC) problems are classical graph covering problems in which one seeks a minimum cost collection of edges which covers the edges or ve...
ICALP
2005
Springer
14 years 1 months ago
2005
Springer
We define an algorithmic paradigm, the stack model, that captures many primal-dual and local-ratio algorithms for approximating covering and packing problems. The stack model is ...
AAIM
2006
Springer
14 years 1 months ago
2006
Springer
Abstract. We study an extension of the set cover problem, the connected set cover problem, the problem is to find a set cover of minimal size that satisfies some connectivity con...