The attempt is not to replace a particular neural network which has already been trained by using Sigmoid or Rel functions. If one does this then one would nece

The attempt is not to replace a particular neural network which has already been trained by using Sigmoid or Rel functions. If one does this then one would necessarily have to use non-linear maps. The whole point is that such a non-linear technique is not necessary for classifications. It is not necessary to confine clusters by hyperplanes for solving a classification problem. Our focus is on individual points. We believe the brain does not do nonlinear maps!