mmm@cup.portal.com (Mark Robert Thorson) (03/20/89)
I have a question or two about Hopfield networks used as associative memory. Hopfield says that when multiple parallel networks are driven from the same clue bus, and drive the same output bus, only the network containing the memory corresponding to the clue responds (assuming the memory is stored in one of the networks, and only one of the networks). In other places, Hopfield says these networks always drive themselves to a stable state. My question is: is there some kind of "null" or "indecision" stable state? When multiple memory planes are used, what state do they have when presented with a memory which they do not hold?