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は、私が取得:属性がない理由RandomForestRegressorとfeature_importances_エラー
AttributeError: 'GridSearchCV' object has no attribute 'feature_importances_'.
誰もが知っていますか?ドキュメントによれば、この属性が存在するはずですか?
完全なコードは:
from sklearn.ensemble import RandomForestRegressor
from sklearn.model_selection import GridSearchCV
#Running a RandomForestRegressor GridSearchCV to tune the model.
parameter_candidates = {
'n_estimators' : [650, 700, 750, 800],
'min_samples_leaf' : [1, 2, 3],
'max_depth' : [10, 11, 12],
'min_samples_split' : [2, 3, 4, 5, 6]
}
RFR_regr = RandomForestRegressor()
CV_RFR_regr = GridSearchCV(estimator=RFR_regr, param_grid=parameter_candidates, n_jobs=5, verbose=2)
CV_RFR_regr.fit(X_train, y_train)
#Predict with testing set
y_pred = CV_RFR_regr.predict(X_test)
#Extract feature importances
importances = CV_RFR_regr.feature_importances_