Re: [UAI] Feature selection for clustering Well, you can use PCA which is a standard tool. (Of course, depending on 
your problem and the nature and quality of the features the results may range
from great to catastrophic). In any case, that's what I'd try first.

Another option would be ICA but you need to satisfy some additional statistical
assumptions for that to work. Worth giving it a try anyway. And there are
kernel versions of PCA and ICA around too.

You haven't specified in what language you are working so I'll suggest 
implementations for MATLAB with which I'm best familiar: (i) PCA is 
built-in in (at least the recent versions of) MATLAB and you can also 
google for the very nice free toolbox called SPRTool. (ii) for ICA you can 
google for the free toolbox FastICA.

If you wish to discuss the question further feel free to mail me.

With best regards,
Felix.

---------------------------------------
Felix Goldberg, M.Sc.
crvplz@tx.technion.ac.il
www.technion.ac.il/~felixg

On Wed, 25 May 2005, Estevam Rafael Hruschka Junior wrote:

> Dear all,
>
> I'm performing a clustering task and need to reduce the amount of my dataset 
> features (attributes). Looking for a feature selection tool, I've only faced 
> packages for classification. As I do not have the class information (in my 
> dataset) I am not able to use them.
>
> Do you know about any (free) feature selection software for clustering tasks?
>
>
>
> Thank you so much in advance.
>
> Best regards,
>
>
>
> Estevam.
>
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
> Estevam Rafael Hruschka Junior, PhD
> Departamento de ComputaÃ§Ã£o
> Universidade Federal de SÃ£o Carlos (DC-UFSCar)
> Rod. Washington Luiz, km 235
> Caixa Postal (PO Box) 676
> 13565-905 SÃ£o Carlos - SP - Brazil
> phone: +55 16 3351-8608
> http://www.dc.ufscar.br/~estevam 
>
> 
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> 
> 
>
