Description

In the Evaluation of Performance on the Test Set section, text_clf.fit(twenty_train.data, twenty_train.target) for an SVM is assigned simply as _ while the assignment for the Naive Bayes classifier above is assigned as text_clf.

http://scikit-learn.org/stable/tutorial/text_analytics/working_with_text_data.html#evaluation-of-the-performance-on-the-test-set