Table 4 Linguistic variables for constructing pairwise comparison matrix25,27,60.
Language scale for importance | AHP | Fuzzy-AHP | |
|---|---|---|---|
Saaty’s scale | Triangular fuzzy scale | Triangular fuzzy reciprocal scale | |
Equal importance | 1 | (1,1,1) | (1,1,1) |
Moderate importance | 3 | (1,3/2,2) | (1/2,2/3,1) |
Strong importance | 5 | (2,5/2,3) | (1/3,2/5,1/2) |
Very strong importance | 7 | (3,7/2,4) | (1/4,2/7,1/3) |
Extreme importance | 9 | (4,9/2,5) | (1/5,2/9,1/4) |
Intermediate values | 2 | (1/2,1,3/2) | (2/3,1,2) |
4 | (3/2,2,5/2) | (2/5,1/2,2/3) | |
6 | (5/2,3,7/2) | (2/7,1/3,2/5) | |
8 | (7/2,4,9/2) | (2/9,1/4,2/7) | |
