Ted said --

> One point for clarification and your further thoughts.
> The way parameterize the OU process in Lavin et al. (2008) it is a
> value of zero (not infinity) that gives a start phylogeny with
> contemporaneous tips.  Sometimes the ML estimate of d (what we call
> it) goes to zero, but more often it may go very small but not zero. 
> In either case, it seems to me you can do a LRT versus a star with one
> d.f.

Can you?  Is the value of zero contained within the range of possible
values, or at its extreme?  I think for LRT you need contained within.

Joe
----
Joe Felsenstein         j...@gs.washington.edu
 Department of Genome Sciences and Department of Biology,
 University of Washington, Box 355065, Seattle, WA 98195-5065 USA

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