Results 21 to 30 of about 1,097,195 (292)

A metric on phylogenetic tree shapes [PDF]

open access: yesSystematic Biology, 2016
Abstract The shapes of evolutionary trees are influenced by the nature of the evolutionary process, but comparisons of trees from different processes are hindered by the challenge of completely describing tree shape. We present a full characterization of the shapes of rooted branching trees in a form that lends itself to natural tree ...
Colijn, C, Plazzotta, G
openaire   +3 more sources

Towards a Taxonomically Intelligent Phylogenetic Database [PDF]

open access: yes, 2007
This note outlines some of the key intellectual obstacles that stand in the way of creating a usable phylogenetic database. These challenges include the need to accommodate multiple taxonomic names and classifications, and the need for tools to query ...
Roderic Page
core   +1 more source

Drawing Phylogenetic Trees [PDF]

open access: yes, 2005
We present linear-time algorithms for drawing phylogenetic trees in radial and circular representations. In radial drawings given edge lengths (representing evolutionary distances) are preserved, but labels (names of taxons represented in the leaves) need to be adjusted, whereas in circular drawings labels are perfectly spread out, but edge lengths ...
Christian Bachmaier   +2 more
openaire   +2 more sources

Characterization of a Branch of the Phylogenetic Tree [PDF]

open access: yesJournal of Theoretical Biology, 2003
We use a combination of analytic models and computer simulations to gain insight into the dynamics of evolution. Our results suggest that certain interesting phenomena should eventually emerge from the fossil record. For example, there should be a ``tortoise and hare effect'': Those genera with the smallest species death rate are likely to survive much
Samuel, Stuart A., Weng, Gezhi
openaire   +3 more sources

Computing phylogenetic trees using topologically related minimum spanning trees

open access: yesJournal of Graph Algorithms and Applications, 2017
Choi et al.(Choi et al. JMLR, 2011) introduced a minimum spanning tree (MST)-based method called CLGrouping, for constructing tree-structured probabilistic graphical models, a statistical framework that is commonly used for inferring phylogenetic trees ...
Prabhav Kalaghatgi, Thomas Lengauer
doaj   +1 more source

DendroSSR: SSRs and sequence alignment as tools for building phylogeny trees

open access: yesBrazilian Journal of Biology, 2023
This study introduces a new method to construct phylogenetic trees by combining both of the Simple Sequence Repeats (SSRs) and sequence alignments.
M. Alhawatema
doaj   +1 more source

Operads and phylogenetic trees

open access: yesTheory and Applications of Categories, 2017
We construct an operad $\mathrm{Phyl}$ whose operations are the edge-labelled trees used in phylogenetics. This operad is the coproduct of $\mathrm{Com}$, the operad for commutative semigroups, and $[0,\infty)$, the operad with unary operations corresponding to nonnegative real numbers, where composition is addition.
Baez, JC, Otter, N
openaire   +4 more sources

BOOL-AN: A method for comparative sequence analysis and phylogenetic reconstruction [PDF]

open access: yes, 2009
A novel discrete mathematical approach is proposed as an additional tool for molecular systematics which does not require prior statistical assumptions concerning the evolutionary process.
Ittzés, Péter   +4 more
core   +1 more source

A navigation system for tree space

open access: yesJournal of Graph Algorithms and Applications, 2016
The reconstruction of evolutionary trees from data sets on overlapping sets of species is a central problem in phylogenetics. Provided that the tree reconstructed for each subset of species is rooted and that these trees fit together consistently, the ...
Sarah Mark, Jeanette McLeod, Mike Steel
doaj   +1 more source

All galls are divided into three or more parts: recursive enumeration of labeled histories for galled trees

open access: yesAlgorithms for Molecular Biology, 2023
Objective In mathematical phylogenetics, a labeled rooted binary tree topology can possess any of a number of labeled histories, each of which represents a possible temporal ordering of its coalescences.
Shaili Mathur, Noah A. Rosenberg
doaj   +1 more source

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