CODEWITHSUNDEEP
pythonscikit-learndata-miningcross-validation
Mohammad Mahdi KouchakYazdi
Mohammad Mahdi KouchakYazdi

Reputation: 1386

What is the score function formula of sklearn.model_selection.cross_val_score?

I know that sklearn.model_selection.cross_val_score function use a make_scorer() function which returns a callable that scores an estimator’s output. What is the scoring function that is used in cross_val_score()function ? I guess it's one of the below choices:

Upvotes: 1

Views: 2637

Answers (1)

Miriam Farber
Miriam Farber

Reputation: 19634

It depends on the scoring that you choose. See the possible list of options here:

http://scikit-learn.org/stable/modules/model_evaluation.html#scoring-parameter

Also, as written here in section 3.1.1, http://scikit-learn.org/stable/modules/cross_validation.html,

"By default, the score computed at each CV iteration is the score method of the estimator. It is possible to change this by using the scoring parameter."

Upvotes: 4

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