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PAMI
2010
112views more  PAMI 2010»
15 years 2 months ago
Polynomial Time Algorithms for Ratio Regions and a Variant of Normalized Cut
—In partitioning, clustering, and grouping problems, a typical goal is to group together similar objects, or pixels in the case of image processing. At the same time, another goa...
Dorit S. Hochbaum
TCBB
2008
107views more  TCBB 2008»
15 years 3 months ago
Progressive Tree Neighborhood Applied to the Maximum Parsimony Problem
Abstract-- The Maximum Parsimony problem aims at reconstructing a phylogenetic tree from DNA sequences while minimizing the number of genetic transformations. To solve this NP-comp...
Adrien Goëffon, Jean-Michel Richer, Jin-Kao H...
WABI
2005
Springer
108views Bioinformatics» more  WABI 2005»
15 years 9 months ago
On the Complexity of Several Haplotyping Problems
We present several new results pertaining to haplotyping. The first set of results concerns the combinatorial problem of reconstructing haplotypes from incomplete and/or imperfect...
Rudi Cilibrasi, Leo van Iersel, Steven Kelk, John ...
EOR
2010
98views more  EOR 2010»
15 years 4 months ago
Lagrangean duals and exact solution to the capacitated p-center problem
In this work we study the Capacitated p-Center Problem (CpCP) and we propose an exact algorithm to solve it. We study two auxiliary problems and their relation to CpCP, and we pro...
Maria Albareda-Sambola, Juan A. Díaz, Elena...
SODA
2008
ACM
131views Algorithms» more  SODA 2008»
15 years 5 months ago
Approximating connected facility location problems via random facility sampling and core detouring
We present a simple randomized algorithmic framework for connected facility location problems. The basic idea is as follows: We run a black-box approximation algorithm for the unc...
Friedrich Eisenbrand, Fabrizio Grandoni, Thomas Ro...