Part 9. `tidymodels`/Unsupervised Learning/Logistic Regression

Materials from class on Wednesday, March 3, 2021

Class Video

Slides

Open the slides in a separate window: https://sph-r-programming.netlify.com/slides/09_machine_learning#1

PCA Video (from StatQuest)

KMeans Video (from StatQuest)

Post-Class

Please fill out the following survey and we will discuss the results during the next lecture. All responses will be anonymous.

  • Clearest Point: What was the most clear part of the lecture?
  • Muddiest Point: What was the most unclear part of the lecture to you?
  • Anything Else: Is there something you’d like me to know?

http://bit.ly/sph504_survey

Muddiest Points

The concept of clustering is still a bit muddy for me.

PCA the graph showing contributions from each variable section was muddy for me.

Still struggling to understand what a principal component analysis is

To be honest, I wasn’t really at 100% for this lecture and I wasn’t able to follow what was going on that well, but I plan to review this on my own.

Clustering

still feeling a little confused on PCA. Will be rewatching the videos on the site.

Clustering

Pca

Still trying to wrap my head around PCA/clustering. The homework will help.

A lot of this was muddy. This jumped pretty far ahead of what we’ve learned in our other classes. It’s hard for me to understand the code when I don’t know the math and whatnot behind it.

Points taken. Hope the videos helped.

What we’re doing for our final project/what our options are for models

We will talk about this in class.