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| Group: |
sci.stat.consult |
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| Author: |
Ray Koopman |
| Subject: |
Re: Principal Component Analysis |
| Body: |
On May 8, 9:21 am, David <david_art...@hotmail.com> wrote:
> Dear list,
> is it possible to use PCA on categorical data?
> I have a group of 30 continuous and categorical data and would like to
> select a subset for modeling a response variable. I read that PCA
> would help me doing this data reduction, but all the examples I have
> seen involve continuous data.
>
> Thanks for your help,
> D.
Yes, there is such a thing as PCA for categorical (and mixed) data,
but I doubt that it would be much help to you. Principal component
regression, which is what you're talking about, is dicey enough with
continuous data, and making some of the variables categorical would
complicate matters substantially.
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| Topic: |
Principal Component Analysis |
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| Message: |
Author |
Date |
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*Message 1* |
Ray Koopman |
Tue, 13 May 2008, 1:10 am |
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