a couple you know few layers of a ComNet you add a latent variable here which goes through another couple layers of a neural net the certain variable is relatively low dimensional and then you run through a decoder to predict the next frame and to predict the value of the latent variable there is actually an encoder and of course the system could cheat because now it has the answer of the target and so you could just use the value of the target to predict the latent variable that wouldn't be very useful so you restrict information