Deadlines
Fall Break Mon–Wed — class meets Friday only.
- Practice 6 Mon Oct 25, midnight
- Book Ch. 3 — How We Know What a Number Means — read for Forum 3, Fri Oct 22
- Forum 3 Wed Oct 27, midnight
- Milestone 1 Sat Oct 24, midnight
Week 8: Fall Break and Practice 06
No class Monday or Wednesday (Fall Break). Class meets Friday for Practice 06.
Enjoy the break — come back rested for the second half of the course.
Learning Objectives
Practice 06 practices Week 7’s objectives on new data:
- 07A I can train and interpret decision tree models and explain how tree depth affects overfitting and underfitting.
- 07B I can use cross-validation to evaluate model performance across multiple data splits.
- 07C I can tune model hyperparameters using grid search.
Materials
- Practice 06 — decision trees, cross-validation and grid search (Friday)
- Forum 3 instructions