December 2018
Beginner to intermediate
330 pages
8h 32m
English
So far, we have been evaluating our models in the test set. By now, it is clear why we do it; however, there is one point we have not discussed yet. Let's go back to the diamond prices problem. In this chapter, we have built a simple multiple linear regression model and we have calculated some metrics on the test set. Let's say that we will use the MAE for evaluating the model. When we calculated this metric, we got 733.67. Now let's repeat the same steps for model building:
Here we have the code again:
## Train-test splitX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.1, ...