Hopfield networks
J.L. Bemley · 2003
A Hopfield network consists of a number of units that are fully connected. Every unit is connected to every other unit. There is a weight associated with each of the inputs that every unit receives from every other unit. Each unit computes the weighted sum of its inputs to generate a net input. The nets were developed by Hopfield (1982). The paper discusses their associative and content-addressable memory, and how they handle changes resulting in differences between the pattern memorised and that presented to them. It considers their energy and their Hamming distance. Their use for optimisation problems is addressed.