1933 search results - page 12 / 387 » Improved Algorithms for the Feedback Vertex Set Problems |
DCOSS
2008
Springer
13 years 9 months ago
2008
Springer
We present the first local approximation schemes for maximum independent set and minimum vertex cover in unit disk graphs. In the graph model we assume that each node knows its geo...
FOCS
2002
IEEE
14 years 13 days ago
2002
IEEE
We consider the classical vertex cover and set cover problems with the addition of hard capacity constraints. This means that a set (vertex) can only cover a limited number of its...
ESA
2003
Springer
14 years 21 days ago
2003
Springer
Let G = (V, E) be an undirected graph, with three numbers d0(e) ≥ d1(e) ≥ d2(e) ≥ 0 for each edge e ∈ E. A solution is a subset U ⊆ V and di(e) represents the cost contr...
ICALP
2009
Springer
14 years 7 months ago
2009
Springer
We examine several online matching problems, with applications to Internet advertising reservation systems. Consider an edge-weighted bipartite graph G, with partite sets L, R. We...
ANTSW
2006
Springer
13 years 11 months ago
2006
Springer
Abstract. For solving combinatorial optimisation problems, exact methods accurately exploit the structure of the problem but are tractable only up to a certain size; approximation ...