Table 1 The transformation relationship between index evaluation language and intuitionistic fuzzy number.
Language variables | Corresponding score | mark | Intuitionistic fuzzy numbers |
Very bad | 1 | VP | (0.15, 0.80) |
Bad | 2 | P | (0.25, 0.65) |
Generally | 3 | M | (0.50, 0.40) |
Good | 4 | G | (0.75, 0.15) |
Very good | 5 | VG | (0.85, 0.10) |