Extended Data Fig. 1: Effects of population size, randomized examples and absence of hidden-layer plasticity on the XOR task.
From: Burst-dependent synaptic plasticity can coordinate learning in hierarchical circuits
a, Comparison of costs for the XOR task. In blue is the cost for the network in Fig. 4 in the main text, but with 2000 neurons per population and slightly different parameter values. The dot-dashed pink line is for when the examples are randomly selected within an epoch. The dotted red line has no plasticity in the hidden layer. The dashed green line is for 400 neurons per population. b-e, Output event rate (ER) after learning. The dashed grey line separates ‘true (1)’ and ‘false (0)’ for the XOR. Only in c is XOR not solved.
