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December 2003

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Sender:
"Classification, clustering, and phylogeny estimation" <[log in to unmask]>
Subject:
From:
"Henderson, Andrew" <[log in to unmask]>
Date:
Mon, 15 Dec 2003 12:00:10 -0500
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"Classification, clustering, and phylogeny estimation" <[log in to unmask]>
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Dear Members: can someone help me with a taxonomic question. I am trying to
distinguish between fixed characters and polymorphic characters. I think the
question can be stated:

Given a matrix of x rows (objects = specimens) and y columns (attributes =
fixed and polymorphic characters) with each attribute having 1-few discrete
states, which attributes are needed to place all objects in groups such that
each group is defined by a unique combination of attribute states and no
group has 2 or more states of any attribute?

Thanks. Sincerely. Andrew Henderson

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