ME Masters G r a d u a t e S t u d e n t P o r t l a n d S t a t e U n i v e r s i t y , POB 3 4 0 6 , P o r t l a n d , OR 9 7 2 0 8 Abstract T h i s paper d e t a i l s t h e approach and methodology used t o build adaptive t r a n s f e r functions i n a f e e d -f orward Back-Propagation neural network, and provides insight i n t o t h e structure dependent properties of using non-scaled analog inputs. The r e s u l t s o f using adaptive t r a n s f e r functions are shown t o