a few years ago and then there is architectural methods and those architectural methods consist in building the energy function in such a way that the volume of stuff they can take low energy is is limited or minimized okay so either about construction or through some regularization term and I'll come to how you do this in a minute but let's start with okay so there are all kinds of you know traditional and supervised learning methods that you can caste that in that language and I said you know basically the construct the basic idea contrastive