this topic because house provides representation and we saw that with the right kind of simple cognitive principles and a lot of data and compute we can learn really useful representations of unlabeled images that are competitive with supervisor plantations so represent so let's let's look at auto regressive models used in the in 2015 the main paper was Bush with which introduced this idea of masked or encoder for density estimation and it was able to produce these I'm miss digits which were reasonable looking but very jittery and