Radial basis activation function for ANN. This really simple implementation uses TFormulas and should probably be replaced with something more efficient later.
constructor for gaussian with center 0, width 1
destructor
evaluate gaussian
evaluate derivative
get expressions for the gaussian and its derivatives
writes the sigmoid activation function source code
minimum of the range of the activation function
{ return 0; }
maximum of the range of the activation function
{ return 1; }