Dataflow matrix machines (by Anhinga anhinga)

and talks about phase transitions (but generally speaking the talk is not well-structured and difficult to understand)

spends all the time on old history which is unapplicable in practice, crams recent developments into very short time at the end... still might be good for links and pointers...

(and the field really does not know how to analyze cases of interest, namely N^2 weights; in my case, I like using less weights, so who knows, perhaps this might be applicable to my favorite approaches)