## “Is your optimization function correct?” Revisited

I think I have a cleaner way to explain Diagnosis Tip #2 in my post on diagnosing problems with your machine learning algorithm. Many machine learning solutions boil down to defining a model that is specified by some parameter $latex \theta$ and then creating an optimization function or error function $latex J( \theta )$ that […]

## Cheat Sheet: Properties of Probability Distributions

Here is a probability distribution cheat sheet that I like to keep around for reference. This focuses on the “big picture” properties of some well known PDFs. The goal is to collect some properties that can help me decide when it’s appropriate to use a particular distribution. Beta Distribution Used in task duration modeling (E.g.. […]