] When the internal architecture of a trained
] artificial neural network is gradually relaxed or
] destroyed, that network tends to spontaneously
] produce a succession of "impressions" from it's
] learned knowledge domain. I refer to this state
] as "dreaming." A dreaming net's output stream
] often holds a mixture of both straightforward and
] hybridized exemplars from its training set. If we
] allow a second neural network to watch for any
] useful concepts that emerge from the first, we
] form a so-called "Creativity Machine." Creativity
] machines may perform remarkable feats of
] invention and discovery, ranging from the composition of
] music to the prediction of totally new ultrahard
] materials.

A technical discussion of Creativity Machines