中国大学MOO
C: 下面的一段python程序是对iris数据集进行训练集合测试集的拆分，已知该数据集中样本的个数为150个，特征为4个。则下面的程序执行完毕后，print语句的输出结果应该为：from sklearn import cross_validation from sklearn import datasets iris = datasets.load_iris() X_train, X_test, y_train, y_test = cross_validation.train_test_split(iris.data, iris.target, test_size=0.2 )print ("X_train.shape:", X_train.shape, "y_train.shape:", y_train.shape)