I wanna ask about Adaptive Neuro Fuzzy Inference System (ANFIS) method. I used clustering to find fuzzy rules and used the mean and deviation standard of each cluster for initialization of the first premise parameters (c and a) of membership function. c is from the mean, and a is from the deviation standard
Now, my problem is I find that there's a cluster that have deviation standard = 0 (zero), so it can't be premise parameter (where the deviation standard will be "a" parameter of membership function) because it will the gbell membership function undefined.
If a=0, how can I calculated the gbell membership function of ANFIS? Is there any solution of finding rules and membership function of ANFIS that could be implemented in clustering? Because I have to make ANFIS manual and I was banned to use MATLAB and I should make ANFIS in java programming and I have to do the manual first.
Thank you.
