Figure 4. Feedforward neural networks: Evolutionary dynamics for two representative simulations, where.

and . The same graphic conventions as in Figure 2 are followed. (A) . Top graphs: increases to the optimal value 0.75; specialization remains low. Bottom graphs: connection weights incoming at output node 1 become positive (strongest connection weight being ); connection weights incoming at output node 2 become negative () or positive, but very close to zero (). (B) . Top graphs: increases to values above 0.75; remains low. Bottom graphs: similar to when , but is closer to zero.