Today

  • Tidymodels (cont’d).

Announcement

  • Feedback on HW3 (thanks to Tomoki)

    • Q3.2: Lack of explanation (only description of the patterns) for admissions data.

    • Q4: Lack of explanation for the unusual peak of age 91.

    • Q5-6: Wrong left_join(). Many memory issues were due to data inflation caused by specifying only subject_id in by (or collect() before filtering).

    • 80-character rule.

  • HW4 is posted and due Mar 8 @ 11:59pm. Start early and ask questions on Slack or office hours.

  • 3 Quizzes (databases, ggplot2, stringr) due Mar 8 @ 11:59pm.

Q&A