it is that they compare to some of the more similar generative models in particular noise contrastive estimation is a procedure for fitting many different generative models including bolts and machines and other different types of generator nets and noise contrastive estimation uses exactly the same value function that we use as as the value function for the minimax game for generative adversarial nets so a lot of people look at this and think maybe these two methods are almost the same thing and and I myself wondered about