Learning Algorithms Have Been Developed to Try to Accomplish Learning

Learning algorithms have been developed to try to accomplish learning in a connectionist network model. These algorithms:

A) require a few trials
B) provide feedback about a response
C) suggest that nodes that are activated at the same time will inhibit each other, and thus decrease learning
D) suggest that learning is accomplished only through forward connections (Node A activates Node B) , and backwards signals (Node B sends a signal back to Node A) are not allowed