Selecting important features
In this exercise, your task is to select only the most important features that will be used by the final model. Remember, that the relative importances are saved in the column importance of the DataFrame called relative_importances.
Este ejercicio forma parte del curso
HR Analytics: Predicting Employee Churn in Python
Instrucciones del ejercicio
- Select only the features with an
importancevalue higher than 1%. - Create a list from those features and print them (this has been done for you).
- Using the index saved in
selected_list, transform bothfeatures_trainandfeatures_testto include the features with an importance higher than 1% only.
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# select only features with relative importance higher than 1%
selected_features = relative_importances[relative_importances.____>0.01]
# create a list from those features: done
selected_list = selected_features.index
# transform both features_train and features_test components to include only selected features
features_train_selected = features_train[selected_list]
features_test_selected = ____[____]