3.3. Model evaluation

3.3. Model evaluation: quantifying the quality of predictions

There are 3 different approaches to evaluate the quality of predictions of a model:

• Estimator score method: Estimators have a score method providing a default evaluation criterion for the problem they are designed to solve. This is not discussed on this page, but in each estimator’s documentation.
• Scoring parameter: Model-evaluation tools using cross-validation (such as model_selection.cross_val_s
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