Webseminarium om RevBayes ikväll kl 20:00

Ikväll kl 20:00 svensk tid anordnar phyloseminar.org en intressant videokonferens om RevBayes. Om du vill ta del av seminariet bör du så snart som möjligt följa instruktionerna på deras hemsida för att ansluta (man behöver bl a skaffa ett konto och installera en java-klient). Mer info om föredraget:

“RevBayes: An R like Environment for Bayesian phylogenetic inference”
John P. Huelsenbeck and Sebastian Höhna (UC Berkeley and Stockholm University)


RevBayes is a computer program that uses directed acyclic graphs
(DAG’s) to specify any type of model, to hold the model and data in
memory, and to compute the likelihood of the parameters of the model.
DAG’s provide a framework for the construction of modular models.
Models can easily be extended and/or parts of the model exchanged
(e.g., the substitution process and clock model) and several models
can be combined. The design of RevBayes should allow the
implementation of any extension to existing models. RevBayes is mainly
developed for Bayesian phylogenetic analyses, but it can be extended
to any inference on probabilistic models.

In this talk, I will give a brief introduction to the concept of DAG’s
and how they are used to construct a model. Once the model is
specified, I will show how to simulate new observations under the
model and how to estimate its parameters. I will demonstrate this in
the RevLanguage, which is an R-like language for building DAG’s for
phylogenetic problems. The RevLanguage is used interactively to
specify the model, as done with R. I will show how a full phylogenetic
model is specified, step-by-step. I will mainly focus on various
standard substitution models, relaxed clock models, and divergence
times priors. Specifically, I will show a new birth-death model with
speciation and extinction rates varying over time and use this in a
integrative analysis. In the integrative analysis I condition only on
the alignment (only the alignment is considered to be known) and
estimate the tree and divergence times simultaneously as well as the
speciation and extinction rates.

West Coast USA:         11:00 (11:00 AM) on Wednesday, February 29
East Coast USA:         14:00 (02:00 PM) on Wednesday, February 29
England:        19:00 (07:00 PM) on Wednesday, February 29
France:         20:00 (08:00 PM) on Wednesday, February 29
Japan:  04:00 (04:00 AM) on Thursday, March 01
New Zealand:    08:00 (08:00 AM) on Thursday, March 01

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