In the case of RidgeCV, I would set the default value to "r2" instead of
None to be more explicit.
Mathieu
On Thu, Oct 24, 2013 at 1:42 PM, Andreas Mueller
<[email protected]>wrote:
> On 10/23/2013 01:00 PM, Josh Wasserstein wrote:
> > Sorry - I figured why the shape of cv_values is (30,3)
> >
> > But what is the default scoring used by RidgeCV?
> None means the scorer of the underlying estimator, so Ridge, which has
> r2 as default, as all regressors do.
> This is apparently missing from the docs. PR that explains the meaning
> of "None" or opening an issue welcome.
> This is also missing in GridSearchCV (and cross_val_score I guess).
>
>
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