It is not clear what the role of the RRAM is. I get that it applies weights, but where do the weights come from? Is this a system that you train with lots of kn

It is not clear what the role of the RRAM is. I get that it applies weights, but where do the weights come from? Is this a system that you train with lots of known stimulus and location samples? And having trained one, you can read it out and program those weights into another?