to be more on computer vision because language pre-training will be covered separately in a guest lecture by Alec Radford and we're also not going to look at how unsupervised learning helps for reinforcement learning that will also be covered separately by Peter in another lecture ok so now let's go to denoising auto-encoders so do isaac autoencoder the basic idea is add some noise to your input and try to remove the noise and decode the actual image so here you see an amnesty j't and you and you see the noisy input on the on the left and you