Dear list,
My aim is to compare the fit of models for which *theta* is allowed to
change at different nodes (different combinations of 1 ,2 or 3 nodes). I
don't really understand the calculation of the deviance, but if i'm not
mistaken the difference between the deviances of 2 models follows a
*chi*square distribution with the difference of parameters in the
models as
degree of freedom. Now, how to compare two models with the same number of
optimum changes but at different nodes?
I am having a hard time understanding the details of the function with
regards to Hansen's (1997) paper. What is the relationship between the
deviance and the RSS from Hansen (1997)? Is it possible to calculate the
RSS from the output of compar.ou ?
I would appreciate any advice or insight on the subject!
Sandra.
--
PhD Student
Muséum National d'Histoire Naturelle
Département Systématique et Évolution
USM 601 / UMR 7205 Origine, Structure et Évolution de la Biodiversité
Reptiles & Amphibiens - Case Postale 30
25 rue Cuvier
F-75005 Paris
Tel : +33 (0) 1 40 79 34 90
Mobile: +33 (0) 6 79 20 29 99
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