MATLAB: I am getting an error ” mcc require the program to assign the value to output argument logistic”

mcc

 Main error coming i command window is given below:
Undefined function or method 'logistic' for input arguments of type 'double'.
Error in ==> TS>feed_forward_signals at 316 V_OUT(row) = logistic(V_OUT(row));
Part of Code is given here:
function logistic=x
      if x>100.0
            x=1.0;
        else if x<-100
                x=0.0;
        else x=1.0/(1.0+exp(-x));
            end
      end
    end
function [V_OUT]= feed_forward_signals(MAT_INOUT, V_IN, V_OUT, V_BIAS, size1, size2, layer)
for row = 1:size2
  V_OUT(row)=0;
  for col = 1:size1
      V_OUT(row)=V_OUT(row)+MAT_INOUT(row, col)*V_IN(col);
  end
  V_OUT(row)=V_OUT(row)+V_BIAS(row); 
end
if layer==0
V_OUT(row) = exp(V_OUT(row));
end
if layer==1
    V_OUT(row) = logistic(V_OUT(row));
 end

Best Answer

Hi
Your function definition of logistic is wrong: You have:
function logistic=x
It should rather be something like:
function y = logistic(x)
Hence matlab is not seeing logistic as a valid function.
Regards, Phil
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