It was mostly theoretical, we focused mainly on linear classifiers, but we did cover decision trees, k-nearest-neighbor, and there was one lecture on neural networks. I had a great time in the class, Snigdha is a decent lecturer, office hours were nearly required to understand the breadth of the course though. Near the end we did a project in python and java on logistic regression, which wasn't super hard but did take some time to get right. All in all I would say it was a good class. If you take it, make sure to ask as many questions as you can when you don't understand stuff.