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Pattern-Based Phylogenetic Distance Estimation and Tree Reconstruction

By Michael Höhl, Isidore Rigoutsos and Mark A. Ragan

Abstract

We have developed an alignment-free method that calculates phylogenetic distances using a maximum-likelihood approach for a model of sequence change on patterns that are discovered in unaligned sequences. To evaluate the phylogenetic accuracy of our method, and to conduct a comprehensive comparison of existing alignment-free methods (freely available as Python package decaf + py at http://www.bioinformatics.org.au), we have created a data set of reference trees covering a wide range of phylogenetic distances. Amino acid sequences were evolved along the trees and input to the tested methods; from their calculated distances we infered trees whose topologies we compared to the reference trees

Topics: Original Research
Publisher: Libertas Academica
OAI identifier: oai:pubmedcentral.nih.gov:2674673
Provided by: PubMed Central
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