การใช้งาน GridSearch

# import the GridSearchCV function
from sklearn.model_selection import ____

# set up parameters: done
parameters = dict(max_depth=depth, min_samples_leaf=samples)

# initialize the param_search function using the GridSearchCV function, initial model and parameters above
param_search = ____(model, parameters, cv=3)

# fit the param_search to the training dataset
____.fit(features_train, target_train)

# print the best parameters found
print(param_search.____)