Cause-and-effect relationships for the fuzzy logic model

According to Kwong Bai (2002), the computational procedure of the fuzzy AHP comprises 4 steps  

Step 1. The importance of the service fiictors is evaluated. Triangular fuzzy numbers (TFN) are used to indicate the relative strength of importance. The five TFNs (1,3,5,7,9) with the corresponding membership functions are depicted in 

Degree of importance Fuzzy number Definition Membership function 

Step 2. The ftizzy comparison matrix A(aij)is built by using the TFNs in a pairwise comparison. The matrix is illustrated in Eq. (5-1). 

Step 3.The fuzzy eigenvalues are solved. A fiizzy eigenvalue 5 is a fiizzy number solution to Eq. (5-2). 

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Figure 5-3 Cause-and-effect relationships for the fuzzy logic model...

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