_:n5159789c55ea409db5930be90e7fa45axb57
<http://schema.org/reviewBody>
"I found the course rather confusing than helpful. One of the key issues with video-only courses is lack of interaction of the user with the material. In previous Andrew's ML courses, this issue was cunningly tackled with \"wake-up\" multiple choice mini-quizzes. Such techniques would help the course a lot.\nThe questions in the exam were poorly phrased and full of typos; some had numerical issues (percentage of errors in the dev set did not sum up).  Some of the answers seemed to contradict with the material as I remembered it from the course: f.e., the question on whether to get more foggy images to improve the model performance should have been answered with \"augmentation is fine as long as it looks fine to the human eye\". This contradicts to Andrew's remarks in the course video \"Addressing data mismatch\" video -&gt; Artificial data synthesis. Are you sure we would not introduce a bias by adding artificial fog to frontal camera images? "
<https://pt.coursera.org/learn/machine-learning-projects/reviews?authMode=signup%3D&authMode=signup&?page=4&page=9>