Stochastic models and descriptive statistics for phylogenetic trees, from Yule to today
نویسندگان
چکیده
منابع مشابه
Stochastic Models and Descriptive Statistics for Phylogenetic Trees, from Yule to Today
In 1924 Yule observed that distributions of number of species per genus were typically long-tailed, and proposed a stochastic model to fit these data. Modern taxonomists often prefer to represent relationships between species via phylogenetic trees; the counterpart to Yule’s observation is that actual reconstructed trees look surprisingly unbalanced. The imbalance can readily be seen via a scat...
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We investigate some discrete structural properties of evolutionary trees generated under simple null models of speciation, such as the Yule model. These models have been used as priors in Bayesian approaches to phylogenetic analysis, and also to test hypotheses concerning the speciation process. In this paper we describe new results for three properties of trees generated under such models. Fir...
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Hiermit erkläre ich, dass ich die Diplomarbeit selbständig angefertigt und nur die angegebenen Quellen und Hilfsmittel verwendet habe. Acknowledgements First and foremost, I would like to thank my supervisor Mike Steel for making it possible for me to come to New Zealand, for the great support throughout my stay, for suggesting great problems to work on and for very helpful discussions and advi...
متن کاملStochastic models for phylogenetic trees on higher-order taxa.
Simple stochastic models for phylogenetic trees on species have been well studied. But much paleontology data concerns time series or trees on higher-order taxa, and any broad picture of relationships between extant groups requires use of higher-order taxa. A coherent model for trees on (say) genera should involve both a species-level model and a model for the classification scheme by which spe...
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introduction: inferring genetic ancestry of different species is a current challenge in phylogenetics because of the immense raw biological data to be analyzed. computational techniques are necessary in order to parse and analyze all of such data in an efficient but accurate way, with many algorithms based on statistical principles designed to provide a best estimate of a phylogenetic topology....
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ژورنال
عنوان ژورنال: Statistical Science
سال: 2001
ISSN: 0883-4237
DOI: 10.1214/ss/998929474