## Principal Components Regression: A Three-Part Series and Upcoming Talk

July 28, 2016

Well, since the last time I posted here, the Y-Aware PCR series has grown to three parts! I’m pleased with how it came out. The three parts are as follows:

- Part 1: A review of standard “x-only” PCR, with a worked example. I also show some issues that can arise with the standard approach.
- Part 2: An introduction to y-aware scaling to guide PCA in identifying principal components most relevant to the outcome of interest. Y-aware PCA helps alleviate the issues that came up in Part 1.
- Part 3: How to pick the appropriate number of principal components.

I will also be giving a short talk on y-aware principal components analysis in R at the** August Bay Area useR Group meetup** on August 9, along with talks by consultant Allan Miller and Jocelyn Barker from Microsoft. It promises to be an interesting evening.

The meetup will be at Guardant Health in Redwood City. Hope to see you there.