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    BMCBI
    2008
    139views more  BMCBI 2008»
    A topological transformation in evolutionary tree search methods based on maximum likelihood combining p-ECR and neighbor joinin
    13 years 5 months ago
    A topological transformation in evolutionary tree search methods based on maximum likelihood combining p-ECR and neighbor joinin
    Download  www.biomedcentral.com
    Background: Inference of evolutionary trees using the maximum likelihood principle is NP-hard. Therefore, all practical methods rely on heuristics. The topological transformations...
    Maozu Guo, Jian-Fu Li, Yang Liu
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    SIAMCOMP
    2008
    124views more  SIAMCOMP 2008»
    A Faster, Better Approximation Algorithm for the Minimum Latency Problem
    13 years 4 months ago
    A Faster, Better Approximation Algorithm for the Minimum Latency Problem
    Download  pluto.huji.ac.il
    We give a 7.18-approximation algorithm for the minimum latency problem that uses only O(n log n) calls to the prize-collecting Steiner tree (PCST) subroutine of Goemans and Willia...
    Aaron Archer, Asaf Levin, David P. Williamson
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