weight | Linguistic scale for the importance |
1 | Two factors are equally important |
3 | Compare one factor with the other, one is weakly important than the other |
5 | Compare one factor with the other, one is obviously important than the other |
7 | Compare one-factor t with the other, one is strongly important than the other |
9 | Compare one factor with the other, one is extremely important than the other |
2, 4, 6, 8 | Median value between neighboring factors |
reciprocal | aji refers to the importance ratio between j and i, aji = 1/aij |