32 search results - page 5 / 7 » Directed Feedback Vertex Set is Fixed-Parameter Tractable |
CORR
2010
Springer
14 years 6 months ago
2010
Springer
We introduce a new technique for proving kernelization lower bounds, called cross-composition. A classical problem L cross-composes into a parameterized problem Q if an instance o...
FSTTCS
2009
Springer
15 years 4 months ago
2009
Springer
A tournament T = (V, A) is a directed graph in which there is exactly one arc between every pair of distinct vertices. Given a digraph on n vertices and an integer parameter k, th...
SIGECOM
2009
ACM
15 years 4 months ago
2009
ACM
The Target Set Selection problem proposed by Kempe, Kleinberg, and Tardos, gives a nice clean combinatorial formulation for many problems arising in economy, sociology, and medicin...
ICALP
2005
Springer
15 years 3 months ago
2005
Springer
In this paper we initiate the study of the AND-OR directed feedback vertex set problem from the viewpoint of approximation algorithms. This AND-OR feedback vertex set problem is m...
DAM
2008
14 years 10 months ago
2008
Given an edge- or vertex-weighted graph or digraph and a list of source-sink pairs, the minimum multicut problem consists in selecting a minimum weight set of edges or vertices wh...