Did you see that on Jeremy Kun's great blog? His primers are how I recently got into building my own Entropy-trained decision tree class and also got an intuiti

Did you see that on Jeremy Kun's great blog? His primers are how I recently got into building my own Entropy-trained decision tree class and also got an intuition for PCA as a reduced basis. I had used truncated SVD and Fourier bases many times before, but to see it with images (eigenfaces!) really sold the intuition. Even better now, in this hacking life after pure math in college and grad school, is that I can build intuition now not just by proofs and exercises, but also efficient, coded implementation. Gives a different feel for the tools and concepts.