© 2000 Todd Neller.  A.I.M.A. text figures © 1995 Prentice Hall.  Used by permission.
Is There Hope?
•Is there any hope for learning functions that are not linearly separable?
•Yes, but a perceptron network isn't enough.
•One needs more than one layer of units between inputs and outputs to compute other functions.
•With enough "hidden" units (units within), any boolean function is computable, and any continuous function is approximable.