I think it refers to the test folds via the k-fold cross-validation that is
internally used via the `cv` parameter of GridSearchCV (or the test folds of an
alternative cross validation scheme that you may pass as an iterator to cv)
Best,
Sebastian
> On Jan 3, 2019, at 9:44 PM, lampahome wrote:
as title
In the doc it says:
best_params_ : dict
Parameter setting that gave the best results on the hold out data.
My question is what is the hold out data?
It's score of train data or test data, or mean of train and test score?
thx
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