On 07/30/2013 06:00 PM, Wifi Gi wrote:
> Lars,
> Thanks, that seems to work. I am a bit confused though - the
> help(cross_validation.cross_val_score) command specifically says the
> "scoring" argument can be either a string or a callable (description
> copied here):
> scoring : string or callable, optional
> Either one of either a string ("zero_one", "f1", "roc_auc",
> ... for
> classification, "mse", "r2", ... for regression) or a callable.
> See 'Scoring objects' in the model evaluation section of the
> user guide
> for details.
> Are the internal docs out of date?
Did you see the model evaluation section of the user guide for details? ;)
You can pass a callable, but the signature is not the same as the score
function that you passed.
>
> I have one other question on this subject - is it possible to get
> multiple metrics (like precision AND accuracy) from the
> cross_val_score function?
Not yet, sorry.
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