After viewing ftp://ftp.sas.com/pub/neural/FAQ.html#A_kinds, I wonder
if ANN could be classified as analog, digital and mixture? A neuron is
digital neuron if its activation function is a step function,
otherwise it is called analog neuron if its activation function is
continuous such as typical sigmoid function. If all of the nodes are
digital the network is called digital network, if it contains both
analog and digital neurons it is called mixture ANN. Analog ANNs such
as MLP are good at function interpolation, digital ones such as
recurrent and dynamics do others such as logic operations?
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