[dsr3]

I think number 3 is a description of Generative Adversarial Network (GAN).

[amelius]

Ok, regardless, it is not really new. ML researchers are doing these kinds of things all the time.

By the way, according to some people, GANs are also a kind of unsupervised learning: https://stackoverflow.com/questions/44445778/are-gans-unsupe...