Typo on best_params

M7. Evaluating model performance M7. Nested cross-validation
#1

There is a typo in the sentence : " We can also show the mean score obtained by using the parameters best_params_ .", the parameter is best_score_.

#2

The text meant that the attribute best_score_ corresponds to the score of the model trained using best_params_ (the other models in the grid search are not saved).

But I agree the wording is not really clear, maybe we could say something similar to

We can also use the attribute best_score_ to show the mean score obtained by using the parameters best_params_.

Thanks for your feedback!