auto_sklearn.py

import sklearn.model_selection
import sklearn.datasets
import sklearn.metrics

import autosklearn.regression

def main():
    X, y = sklearn.datasets.load_boston(return_X_y=True)
    feature_types = (['numerical'] * 3) + ['categorical'] + (['numerical'] * 9)
    X_train, X_test, y_train, y_test = \
        sklearn.model_selection.train_test_split(X, y, random_state=1)

    automl = autosklearn.regression.AutoSklearnRegressor(
        time_left_for_this_task=120,
        per_run_time_limit=30,
        tmp_folder='/tmp/autosklearn_regression_example_tmp',
        output_folder='/tmp/autosklearn_regression_example_out',
    )
    automl.fit(X_train, y_train, dataset_name='boston',
               feat_type=feature_types)

    print(automl.show_models())
    predictions = automl.predict(X_test)
    print("R2 score:", sklearn.metrics.r2_score(y_test, predictions))