statsandstuff a blog on statistics and machine learning

Autoencoders

High dimensional data is usually very structured, and this structure allows us to map the data to a smaller dimensional space without losing much information.  For example, if this post is encoded with ASCII, it lives in a \((256)^{\text{length post}}\) point space.  But since I’m writing in English, the sequence of characters “Life is a tale to... Read more

Alligators, Dinosaurs, and Scaling

I was walking around a book store in Fremont and found an elementary math education book.  While flipping through the book, I found the following neat problem. Suppose you find a dinosaur skeleton that looks like an alligator, except that it is twice as big.  A typical alligator weighs 500 pounds.  Estimate how much the dinosaur weighed? The a... Read more