244 CHAPTER 7. FUZZY-NEURAL AND NEURAL-FUZZY CONTROL
This is not a very good approximation to our function. We can test the
effect of increasing the number of membership functions.
ïFrom the ANFIS Editor, choose Generate FIS and set Number of to 6.The surface will change to something like the following, which is a much
better approximation to the function.
ïIn the ANFIS Editor, under View, choose View rules to open the Rule
Viewer.The choice of 6 membership functions for each of the two inputs has generated
36 rules.