Bremer support

Karl Magnacca kmagnacca at WESLEYAN.EDU
Wed Nov 30 11:45:14 CST 2005


> What a lot of people don't realize when using PAUP is that searches
> can spend (waste) large amounts of time on suboptimal islands/
> plateaus.

Yes, I forgot to mention an important part of why my searches were faster:
I was only holding 30 trees at a time.  Through experimentation with
different settings I found that holding more than 30 trees didn't help
any, though if you have a smaller data set than the one I was running you
can use less.  I also found that 100 searches was sufficient most of the
time, but it depends on how island-dense your data set is.  Obviously for
a final search you will want to do more to make sure you get all islands
with shortest trees.  IIRC, the equivalent command in NONA is h/30mu*100
for a search of 100 replicates, holding 30 trees at a time, followed by
max* to find all the shortest trees.

Karl
=====================
Karl Magnacca, USGS-PIERC
PO Box 11, Hawaii Natl. Park, HI 96718
808-985-6076




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