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» A linear time algorithm for L(2,1)-labeling of trees
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JDA
2007
156views more  JDA 2007»
15 years 5 months ago
A linear time algorithm for the inversion median problem in circular bacterial genomes
In the median problem, we are given a distance or dissimilarity measure d, three genomes G1, G2, and G3, and we want to find a genome G (a median) such that the sum 3 i=1 d(G, Gi...
Enno Ohlebusch, Mohamed Ibrahim Abouelhoda, Kathri...
SIAMCOMP
1998
111views more  SIAMCOMP 1998»
15 years 5 months ago
Computing the Local Consensus of Trees
The inference of consensus from a set of evolutionary trees is a fundamental problem in a number of fields such as biology and historical linguistics, and many models for inferrin...
Sampath Kannan, Tandy Warnow
VLDB
2006
ACM
162views Database» more  VLDB 2006»
16 years 6 months ago
Dependency trees in sub-linear time and bounded memory
We focus on the problem of efficient learning of dependency trees. Once grown, they can be used as a special case of a Bayesian network, for PDF approximation, and for many other u...
Dan Pelleg, Andrew W. Moore
IPCO
2010
153views Optimization» more  IPCO 2010»
15 years 3 months ago
An Effective Branch-and-Bound Algorithm for Convex Quadratic Integer Programming
We present a branch-and-bound algorithm for minimizing a convex quadratic objective function over integer variables subject to convex constraints. In a given node of the enumerati...
Christoph Buchheim, Alberto Caprara, Andrea Lodi
SODA
2008
ACM
134views Algorithms» more  SODA 2008»
15 years 7 months ago
Fast algorithms for finding proper strategies in game trees
We show how to find a normal form proper equilibrium in behavior strategies of a given two-player zero-sum extensive form game with imperfect information but perfect recall. Our a...
Peter Bro Miltersen, Troels Bjerre Sørensen