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Re: Cladistics (was Sci. Am. - present)
At 08:29 AM 2/23/98 -0600, chris brochu wrote:
>Not entirely. Huelsenbeck and some of his coauthors have devised
>likelihood methods based on stratigraphic data,
I think I remember some of this work. Or at least I read some articles on
doing MLE estimates of stratigraphic ranges, and also some article on using
range confidence limits to constrain phylogenies. Is that what you are
talking about here?
> and ML has been used for
For phylogenetic reconstruction? or for clustering?
I certainly do not remember ever seeing the former published. Though, given
my non-pro status, I could easily have missed it. If so, I would
appreciate some references.
>Those already exist, in large number. Have a look at the Templeton
>or the compare-2 test, or the PTP test, or the T-PTP test,
These sound interesting. I will try to hunt down references to these. Do
you have any immediately handly?
>(These last two are actually tests of nodes rather than trees, and
>first is more a test of character distributional difference, but
>address your point.)
Node testing might be adequate. In fact it might simplify things. Instead
of having to compute consensus trees from the non-significantly different
trees, one could just drop non-significant nodes.
May the peace of God be with you. firstname.lastname@example.org