Tuning with Grid Search
Settings you choose before training, such as n_neighbors or max_depth, are hyperparameters. GridSearchCV tries every combination you list, scores each with cross-validation and keeps the best.
Examplepython
Quick check
What is a hyperparameter?
Your turn: write the code
Search max_depth over [1, 2, 3] for a decision tree with 5-fold cross-validation and print the best max_depth.
Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.
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