[comp.ai.neural-nets] Neural Net Fractal Dimension

robert@aerospace.aero.org (Bob Statsinger) (03/23/90)

In article <4098@zehntel.UUCP> donw@zehntel.UUCP (Don White) writes:
>
>     I wonder how one would go about quantifying the fractional dimension of
>  an neural net. Hmmmm.
>
>     Don White
>     Box 271177 Concord, CA. 94527-1177
>     zehntel!donw
>    

	For unsupervised nets with feedback (eg, BAM, ART), one can use a
Lyapunov function as a stability criteria (ie, show that the L function's
time derivative is strictly decreasing so that solutions are shown to
be strongly stable).

	This function is presumably an approximation to the complete 
Lyapunov expansion of the state space of the net. The Lyapunov expansion
can be used as a measure of the net's fractal dimension.

-- 
Bob Statsinger 				Robert@aerospace.aero.org

	The employers expressed herein are strictly mine and are
	not necessarily those of my opinion's....uh..er...whatever...