Linguistic scale for fuzzy Delphi method questionnaire
| 7-point linguistic scale | Fuzzy scale (m1, m2, m3) |
| 1. Extremely not important | 0.00, 0.00, 0.10 |
| 2. Not important | 0.00, 0.10, 0.30 |
| 3. Somewhat not important | 0.10, 0.30, 0.50 |
| 4. Neutral | 0.30, 0.50, 0.70 |
| 5. Somewhat important | 0.50, 0.70, 0.90 |
| 6. Important | 0.70, 0.90, 1.00 |
| 7. Extremely important | 0.90, 1.00, 1.00 |