learning right if you want to learn to distinguish your motorcycles from non motorcycles you have a training set with some and this is a pain because there's a lot of work to come up with a lot of pictures and motorcycles it was like tens of thousands of them so in the unsupervised feature learning on the self or learning problem what you do is instead we're going to give you a large source of unlabeled images then give you an infinite source of unlabeled images because of the web where we all have an effectively infinite source of images