Answered: TODO 2 Print the shape for X_train.…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

1. To obtain a train and test split, use the train test split() method. Save the output to the files X_train, X_test, y_train, and y_test.

Pass the necessary arguments X and y.
By specifying the test_size keyword parameter, we can further specify that we wish to use 20% of the training data.
Finally, use the keyword option random_state=42 to establish the random seed, ensuring that we obtain the same split every time we run this code.

# TODO 1

X_train, X_test, y_train, y_test =

todo_check([

(X_train.shape == (413,29),'X_train does not have the correct shape (413, 29)'),

(X_test.shape == (104,29),'X_test does not have the correct shape (104, 29)'),

(y_train.shape == (413,),'y_train does not have the correct shape (413,)'),

(y_test.shape == (104,),'y_test does not have the correct shape (104,)'),

(np.all(np.isclose(X_train.values[-5:,-4], np.array([17.7,18.2,21.8,23.8,20.1]),rtol=.01)),'X_train does not contain the correct values! Make sure you used `X` when splitting!'),

(np.all(np.isclose(y_test.values[-5:], np.array([1.25561604,1.8531681,1.15373159,4.01259206,3.56558124]),rtol=.01)),'y_test does not have the correct values! Make sure you used `y` when splitting!')

])

TODO 2 Print the shape for X_train.

TODO 3 Print the shape for y_train.

TODO 4 Print the shape for X_test.

TODO 5 Print the shape for y_test.

# TODO 2

# TODO 3

# TODO 4

# TODO 5

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