Intro to PCA
An introduction to what PCA is doing to your data using an easy mental model. We show examples of how to use PCA in Python + an interesting side effect...
Sorting Colours using PCA
IPython Notebook used available here. We show an example of how to "sort" high dimensional objects using PCA, specifically we answer "how can we sort colours?" This screencast presents an...
Using Patsy for Categorical Data
Patsy is one of those really cool Python libraries that does one thing - and only one thing - really well. The data we are given often contains categorical variables...