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CPM'09: 20th Annual Symposium on Combinatorial Pattern Matching, Lille, France : (2009)
The Structure of Level-k Phylogenetic Networks
Philippe Gambette ( ) 1, Vincent Berry 1, Christophe Paul 1
(2009-06-22)

Evolution is usually described as a phylogenetic tree, but due to some exchange of genetic material, it can be represented as a phylogenetic network which has an underlying tree structure. The notion of level was recently introduced as a parameter on realistic kinds of phylogenetic networks to express their complexity and tree-likeness. We study the structure of level-k networks, and how they can be decomposed into level-k generators. We also provide a polynomial time algorithm which takes as input the set of level-k generators and builds the set of level-(k+1) generators. Finally, with a simulation study, we evaluate the proportion of level-k phylogenetic networks among networks generated according to the coalescent model with recombination.
1:  Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM)
CNRS : UMR5506 – Université Montpellier II - Sciences et Techniques du Languedoc
[INFO/ALGCO]
Computer Science/Bioinformatics

Life Sciences/Quantitative Methods

Computer Science/Discrete Mathematics
Combinatorics – phylogenetic networks – decomposition – directed graphs – level-k networks
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2009GambetteBerryPaulGenerators.pdf(522.6 KB)

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