Dear Gabriel,
So, for the normalized indices in apTreeshape, what does it mean when
a tree has a negative balance score? Which direction is "more
balanced" or "less balanced"?
If you use Colless for instance, negative values mean more balanced than
the expected value under the Yule or ERM model.
NOTE: for my purposes, I'm not really interested in determining
whether a tree is more or less balanced than a Yule/ERM expectation,
but how its balance compares to other trees in a time series.
I would rather use the beta splitting statistic especially if you want
to compare the balance of tress of different sizes.
Sincerely
Michael
cheers,
Gabe
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Michael BLUM
CNRS Research Associate
Tel: +33 (0)4 56 52 00 65
[email protected]
http://membres-timc.imag.fr/Michael.Blum/
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