<person> A researcher at the University of Helsinki who has
been studying neural networks for many years with the idea
of modelling as closely as possible the behaviour of
biological systems. His name is commonly associated with a
particular kind of neural network in which there are only two
kinds of neurons (see McCulloch-Pitts), input and others.
All the input neurons are connected to all others and the
others are connected only to their other nearest neighbors.
The training algorithm is a relatively simple one based on
the geometric layout of the neurons, and makes use of
simulated annealing.
