deep supervised learning but what if you don't have a large data set what if you're in domains such as medical imaging or robotics or translation of rare languages or recommendation systems in each of these situations we don't have a large data set for every possible task every possible switch situation or every possible person we want to personalize our machine learning system to or what if you want a more general-purpose AI system that can do many different things that you want to be able to continuously adapt and learn