Thanks :)
On Wed, Aug 28, 2013 at 7:00 PM, Lars Buitinck <[email protected]> wrote:
> 2013/8/28 abhishek <[email protected]>:
> > Im using the SelectPercentile function with chi2 feature selection in an
> NLP
> > task. I have created a sparse matrix using the feature extraction
> techniques
> > in sklearn. However, when I do the feature selection it thows a warning
> > saying:
> >
> > "UserWarning: Duplicate scores. Result may depend on feature
> ordering.There
> > are probably duplicate features, or you used a classification score for a
> > regression task."
> >
> > Can anyone explain what does this mean? Am I doing something wrong?
>
> Probably not. This warning pops up when you have two features with the
> same chi² score. When working with term frequencies, that's
> practically impossible to avoid, so we removed the warning in the
> development version. It'll be gone in 0.15. Please ignore it for now,
> it's harmless.
>
> --
> Lars Buitinck
> Scientific programmer, ILPS
> University of Amsterdam
>
>
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--
Regards
Abhishek Thakur
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