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RE: st: manipulating matrix elements
I'm on digest mode, so forgive the off-cycle nature of my replies.
I just checked the archives and saw Nick's question about the additive
element. The reference for this is:
Martin, John Levi. 1999. "Entropic Measures of Belief System
Constraint." Social Science Research 28:111-134.
A simpler and perhaps more useful exposition is given in:
-----. 2002. "Power, Authority, and the Constraint of Belief Systems."
American Journal of Sociology 197:861-904.
Adding the ln(M) [where M = number of cells] is meant to standardize the
entropy (actually, the negative of the entropy) so that it varies from 0
to 1 (i.e., from more to less entropic). This standardization assumes,
however, that no (or few) cells have particularly low counts. As such,
it's really only useful in large-n applications. But since that's what
I have, that's OK.
I still like the .ado version, since it allows me to do other things I
might want to do. Would you mind, Nick, adding the additive term into
the program you wrote? Thanks.
National Science Foundation Graduate Research Fellow
Caroline H. and Thomas S. Royster, Jr. Fellow
Department of Sociology
University of North Carolina at Chapel Hill
200 Hamilton Hall (CB #3210)
Chapel Hill, NC 27599
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