一分类问题from sklearn.metrics import accuracy_score from sklearn.model_selection import train_test_split X_train, X_test, y_train, y_test train_test_split(train_x, train_y, test_size0.33, random_state123) model.fit(X_train, y_train) x_pred xgbr.predict(X_test) accuracy_score(y_test, y_pred)二回归问题from sklearn.metrics import mean_squared_error from sklearn.model_selection import train_test_split X_train, X_test, y_train, y_test train_test_split(train_x, train_y, test_size0.33, random_state123) model.fit(X_train, y_train) x_pred xgbr.predict(X_test) mean_squared_error(y_test, y_pred)参考