Computation in Neural Nets - Understanding Understanding: Essays on Cybernetics and Cognition - page 95

FIGURE 37. Adaptive network.
FIGURE 38. Logical functions ordered
according to increasing logical strength
Q .
Consider this net exposed to a variety of stimuli which consist of shadows
of one-dimensional objects that are in the “visual field” of the sensors. With
all computing elements operating on functions with low Q the feedback
loop from S is highly active and shifts all functions to higher Q 's. It is not
difficult to see that this process will go on with decreasing activity in the
loop until function No. 6 or even functions No. 4, or 2 of table 1 are reached,
at which instant the net is ready to compute the presence of edges in the