Definition: In this task, you are given a part of an article. Your task is to generate headline (title) for this text. Preferred headlines are under fifteen words.
Input: Basics 5 Learning Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Task types and creation . . . . . . . . . . . . . . . . . . . . . . . 5 Further settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Accessing a learning task . . . . . . . . . . . . . . . . . . . . . . 10 Modifying a learning task . . . . . . . . . . . . . . . . . . . . . . 13 Example tasks and convenience functions . . . . . . . . . . . . . 15 Learners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Constructing a learner . . . . . . . . . . . . . . . . . . . . . . . . 15 Accessing a learner . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Modifying a learner . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Listing learners . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Training a Learner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Accessing learner models . . . . . . . . . . . . . . . . . . . . . . . 23 Further options and comments . . . . . . . . . . . . . . . . . . . 26 Predicting Outcomes for New Data . . . . . . . . . . . . . . . . . . . . 27 Accessing the prediction . . . . . . . . . . . . . . . . . . . . . . . 29 Adjusting the threshold . . . . . . . . . . . . . . . . . . . . . . . 33 Visualizing the prediction . . . . . . . . . . . . . . . . . . . . . . 35 Evaluating Learner Performance . . . . . . . . . . . . . . . . . . . . . 38 Available performance measures . . . . . . . . . . . . . . . . . . . 38 Listing measures . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Calculate performance measures . . . . . . . . . . . . . . . . . . 40 Access a performance measure . . . . . . . . . . . . . . . . . . . . 41 Binary classification . . . . . . . . . . . . . . . . . . . . . . . . . 42 Resampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Stratified resampling . . . . . . . . . . . . . . . . . . . . . . . . . 47

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