2019practice_midterm (3).pdf - ORIE 4741 Professor Udell ORIE 4741 2019 Practice Midterm Exam Rules for the exam • Write your name and NetID at the

2019practice_midterm (3).pdf - ORIE 4741 Professor Udell...

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ORIE 4741 Professor Udell ORIE 4741 2019 Practice Midterm Exam October 10, 2019 Rules for the exam. Write your name and NetID at the top of the exam. The exam is 75 minutes long. Every multiple choice is worth 1 point per option. Every free answer question is worth 3 points per part unless noted otherwise. You may use one (8.5 × 11) page of notes (back and front). No computers, calculators, phones, or other electronic devices are allowed. Only answers written in pen will be considered for regrading. For multiple choice questions, no explanations of your answers are needed. Note that more than one choice may be true. Honor code. Write the following statement, and sign your name below: I certify that all work on this exam is my own. 1
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ORIE 4741 Professor Udell 1. Generalization and overfitting . For each of the following statements, which combination of italicized words correctly completes the statement? Circle one for each choice. A. If the model has low/high training set error and low/high test set error, the model generalizes. B. If the model has low/high training set error and low/high test set error, the model overfits. C. If the model has low/high training set error and low/high test set error, the model underfits. D. We can fix underfitting by either using a more/less complex model or adding/re- moving features.
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