### Consider first the same example as in notebook `N2_Regression_tree.ipynb`
This is a regression problem. Rather than evaluating the optimal tree structure of a single tree, random forest is considered.
See the [sklearn guide](https://scikit-learn.org/stable/modules/generated/sklearn.ensemble.RandomForestRegressor.html)
See the [`RandomForestRegressor` sklearn documentation](https://scikit-learn.org/stable/modules/generated/sklearn.ensemble.RandomForestRegressor.html).
