How does RemovePercentage remove data

[Paul]

Hey there, I was wondering if the RemovePercentage function removes values
from the first Instances of the ARFF, the last Instances of the ARFF or at
random? Any help would be greatly appreciated :)



--
Sent from: https://weka.8497.n7.nabble.com/
_______________________________________________
Wekalist mailing list -- [hidden email]
Send posts to [hidden email]
To unsubscribe send an email to [hidden email]
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

[Peter Reutemann]

> Hey there, I was wondering if the RemovePercentage function removes values
> from the first Instances of the ARFF, the last Instances of the ARFF or at
> random? Any help would be greatly appreciated :)

The unsupervised RemovePercentage filter removes instances from the
start. With the inverse flag on, you remove the other bit.

Here's a link to the relevant code section:
https://github.com/Waikato/weka-trunk/blob/f5ea31bbdf5c6deb21bcd709d72d4963b5a54c96/weka/src/main/java/weka/filters/unsupervised/instance/RemovePercentage.java#L313

Cheers, Peter
--
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
[phone]
http://www.cms.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/
_______________________________________________
Wekalist mailing list -- [hidden email]
Send posts to [hidden email]
To unsubscribe send an email to [hidden email]
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