نتایج جستجو برای: phylogenetics

تعداد نتایج: 25188  

Journal: :Frontiers in Ecology and Evolution 2023

CORRECTION article Front. Ecol. Evol., 05 September 2023Sec. Phylogenetics, Phylogenomics, and Systematics Volume 11 - 2023 | https://doi.org/10.3389/fevo.2023.1279696

Journal: :Molecular Biology and Evolution 2020

Journal: :Proceedings. Biological sciences 2013
Fabricio Villalobos Thiago F Rangel José Alexandre F Diniz-Filho

Differential coexistence among species underlies geographical patterns of biodiversity. Understanding such patterns has relied either on ecological or historical approaches applied separately. Recently, macroecology and community phylogenetics have tried to integrate both ecological and historical approaches. However, macroecology is mostly non-phylogenetic, whereas community phylogenetics is l...

Journal: :Journal of mathematical biology 2005
J G Sumner P D Jarvis

It is possible to consider stochastic models of sequence evolution in phylogenetics in the context of a dynamical tensor description inspired from physics. Approaching the problem in this framework allows for the well developed methods of mathematical physics to be exploited in the biological arena. We present the tensor description of the homogeneous continuous time Markov chain model of phylo...

Journal: :Journal of Computer and System Sciences 2021

Maximum parsimony distance is a measure used to quantify the dissimilarity of two unrooted phylogenetic trees. It NP-hard compute, and very few positive algorithmic results are known due its complex combinatorial structure. Here we address this shortcoming by showing that problem fixed parameter tractable. We do establishing linear kernel i.e., after applying certain reduction rules resulting i...

2002
James P. Davis Sreesa Akella Peter Waddell

Evaluating phylogenetics trees is an endeavor fundamental to comparative genomics and a core discipline of Bioinformatics. However, with single trees taking up to a week on the fastest processor under general models of evolution and the number of trees growing exponentially with the number of sequences analyzed, this is an exceptionally computationally intensive endeavor. There has been much wo...

Journal: :SIAM journal on mathematics of data science 2021

A common assumption in multiple scientific applications is that the distribution of observed data can be modeled by a latent tree graphical model. An important example phylogenetics, where t...

Journal: :Systematic biology 2004
David Posada Thomas R Buckley

Model selection is a topic of special relevance in molecular phylogenetics that affects many, if not all, stages of phylogenetic inference. Here we discuss some fundamental concepts and techniques of model selection in the context of phylogenetics. We start by reviewing different aspects of the selection of substitution models in phylogenetics from a theoretical, philosophical and practical poi...

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