Back in grad school days, it was fun to pick NP-Complete optimization problems and have little competitions to see who could get the best solution (lowest cost) in a given time frame. One of the more popular competitions we had was made semi-formal called maxpath: Max Path Pic: I’ve always enjoyed optimization more than machine learning. I remember having coffee with Kaggle’s Anthony Goldbloom circa 2010 and saying that he should add competitions for optimization problems. It wasn’t a g...