Today

  • Random forest: VIM.

  • SVM (cont’d).

  • Neural network.

FAQs

  • SVM: why $f(x) = \beta_0 + \sum_{i=1}^n \alpha_i y_i \langle x, x_i \rangle$.

  • Updated workflows to use auc-roc as criterion in classification problems.

Announcement

  • HW4 is due Feb 24 @ 11:59pm.