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gbr = GradientBoostingRegressor(n_estimators=1000, max_depth=5, random_state=22), Y_train)
print("Gradient Boosting R^2 Score: ", gbr.score(X_train, Y_train))
print("Gradient Boosting Test R^2 Score: ", gbr.score(X_test, Y_test))
y_pred = gbr.predict(X_test)
print("Mean Squared Error: ", mean_squared_error(y_pred, Y_test))
print("Mean Absolute Error: ", mean_absolute_error(y_pred, Y_test))
print("Cross Validation Score: ", cross_val_score(gbr, X_test, Y_test, cv=5))
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