Correspondence Analysis
by Riccardo (Jack) Lucchetti
This is both an announcement and a plea for help: some time ago, I put
together some functions for simple correspondence analysis, which I am not
at all an expert of (I used to be pretty good at this stuff in the late
1980s, then I stopped following the literature).
These functions are now available as a function package, that you'll find
on the server under the "corresp" name. I decided to make this stuff
public because it's a nice illustration of how to use string arrays, so
you'll need a pretty recent version of gretl to run it.
Besides, in order to run the example, you'll also need the datafile
attached here, which contains a classic example, used in practically all
software implementations as a simple benchmark (see Greenacre (2007),
"CORRESPONDENCE ANALYSIS in PRACTICE", Chapman & Hall).
The plea for help is: is there anybody out there who will adopt the
package? I'm not at all sure I implementend things the right way and, as I
said, I haven't followed the literature for a looooong time (and I have no
intention/time for doing so).
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Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
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9 years, 10 months
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