'True tree' diaporamas de présentation

Statistical tree estimation

Statistical tree estimation. Tandy Warnow. Topics. Phylogeny as statistical estimation problem Stochastic models of evolution Distance-based estimation Maximum parsimony tree estimation Maximum likelihood tree estimation Bayesian tree estimation.

1.12k views • 111 slides

Introduction to Phylogenetic Estimation Algorithms

Introduction to Phylogenetic Estimation Algorithms. Tandy Warnow. Phylogeny. From the Tree of the Life Website, University of Arizona. Orangutan. Human. Gorilla. Chimpanzee. Phylogenetic Analysis. Gather data Align sequences Estimate phylogeny on the multiple alignment

1.3k views • 107 slides

Introduction to Phylogenies

617 views • 47 slides

Computational and mathematical challenges involved in very large-scale phylogenetics

Computational and mathematical challenges involved in very large-scale phylogenetics. Tandy Warnow The University of Texas at Austin. How did life evolve on earth?. An international effort to understand how life evolved on earth

572 views • 47 slides

Statistical stuff: models, methods, and performance issues

479 views • 47 slides

Decision Trees

407 views • 30 slides

Distance methods

Distance methods. Distance methods. UPGMA: similar to hierarchical clustering but not additive Neighbor-joining: more sophisticated and additive What is additivity?. Additivity. UPGMA. UPGMA is not additive but works for ultrametric trees. Takes O(n^3) time. B. A. C. D. A. 6. 26.

390 views • 14 slides

How many characters are needed to reconstruct the true tree?

215 views • 14 slides