Re: Problem with WEKA

> I am trying to classify some data using classifiers such as SMO, when i press start a message appears:

New question = new post (with an appropriate subject). Don't reply to old posts.

> Problem evaluating classifer weka.classifiers.SMO:
> cannot handle string attributes
>
> The same error happen with other classifiers too.

STRING attributes are use for textual attributes and most classifiers
cannot work with them directly.

If these attributes should be treated as NOMINAL ones, then you need
to convert them using the StringToNominal filter:
https://weka.sourceforge.io/doc.dev/weka/filters/unsupervised/attribute/StringToNominal.html

If they indeed contain text, then you could turn them into numeric
attributes using the StringToWordVector filter:
https://weka.sourceforge.io/doc.dev/weka/filters/unsupervised/attribute/StringToWordVector.html

Cheers, Peter
-- 
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
https://www.cs.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/
_______________________________________________
Wekalist mailing list -- [email protected]
Send posts to [email protected]
To unsubscribe send an email to [email protected]
To subscribe, unsubscribe, etc., visit https://list.waikato.ac.nz/postorius/lists/wekalist.list.waikato.ac.nz
List etiquette: http://www.cs.waikato.ac.nz/~ml/weka/mailinglist_etiquette.html