I am reading this paper where the training has no labelled outputs.
Consider the figure:
Now there are no labelled outputs z. But they are still training it somehow.
I see that it is reinforcement learning, but then reinforcement learning works in a different scenario where there are actions. I guess here they are sampling from some distribution the z values for the purpose of training, but how can that work, you need to have the ground truth values to compute the error.
I am really not able to understand this method in the context of training in a supervised way.
Please explain how you could explain how reinforcement learning can be used as a substitute for missing labels in supervised setting.