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DISOPT
2011
240views Education» more  DISOPT 2011»
13 years 3 months ago
On the directed Full Degree Spanning Tree problem
We study the parameterized complexity of a directed analog of the Full Degree Spanning Tree problem where, given a digraph D and a nonnegative integer k, the goal is to construct a...
Daniel Lokshtanov, Venkatesh Raman, Saket Saurabh,...
FOCS
2005
IEEE
14 years 2 months ago
The Closest Substring problem with small distances
In the CLOSEST SUBSTRING problem k strings s1, ..., sk are given, and the task is to find a string s of length L such that each string si has a consecutive substring of length L ...
Dániel Marx
ALGORITHMICA
2006
77views more  ALGORITHMICA 2006»
13 years 9 months ago
Scalable Parallel Algorithms for FPT Problems
Algorithmic methods based on the theory of fixed-parameter tractability are combined with powerful computational platforms to launch systematic attacks on combinatorial problems o...
Faisal N. Abu-Khzam, Michael A. Langston, Pushkar ...
AAIM
2008
Springer
96views Algorithms» more  AAIM 2008»
14 years 3 months ago
Minimum Leaf Out-Branching Problems
Abstract. Given a digraph D, the Minimum Leaf Out-Branching problem (MinLOB) is the problem of finding in D an out-branching with the minimum possible number of leaves, i.e., vert...
Gregory Gutin, Igor Razgon, Eun Jung Kim
ICALP
2010
Springer
14 years 1 months ago
Preprocessing of Min Ones Problems: A Dichotomy
Min Ones Constraint Satisfaction Problems, i.e., the task of finding a satisfying assignment with at most k true variables (Min Ones SAT(Γ)), can express a number of interesting ...
Stefan Kratsch, Magnus Wahlström