An Iterative Procedure for Optimizing the Performance of the Fuzzy-Neural Job Cycle Time Estimation Approach in a Wafer Fabrication Factory

Algorithm 1

The sample MATLAB code for the FCM approach.

A=[0.3857  7175  0.5381;…;0.1614  0.4281  0.5803]

c=2

[center,U,obj_fun]=fcm(A,c);

Jm=min(obj_fun)

e2_min=9999;

for  i=1∶c

 for  j=i+1∶c

  e2_sum=0;

  for  k=1∶3

   e2_sum=e2_sum+(center(i,k)−center(j,k))^∧2;

  end

  if  e2_sum<e2_min

   e2_min=e2_sum;

  end

 end

end

e2_min

S=min(Jm)/(40*e2_min)