COCOON
2006
Springer
13 years 8 months ago
2006
Springer
In a recent article, Nakhleh, Ringe and Warnow introduced perfect phylogenetic networks--a model of language evolution where languages do not evolve via clean speciation--and form...
WADS
2007
Springer
13 years 10 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...
STACS
2010
Springer
13 years 11 months ago
2010
Springer
We present a method for reducing the treewidth of a graph while preserving all the minimal s−t separators. This technique turns out to be very useful in the design of parameteriz...