Table 14.
Comparative analysis with other methods
| Decision approaches | Actual grey relational grade (Sypt1, Sypt2, Sypt3, Sypt4) | Ranking sequence |
|---|---|---|
| PFWA operator (Garg 2017) | (0.32, 0.32, 0.06, 0.29) | (Med2 > Med1 > Med4 > Med3 or Med1 > Med2 > Med4 > Med3) |
| Cross-entropy (Wei 2016) | (0.82, 0.82, 0.67, 0.47) | (Med4 > Med3 > Med1 > Med2 or Med4 > Med3 > Med2 > Med1) |
| TODIM method (Wei 2018a) | (0.72, 0.73, 0.87, 0.86) | (Med3 > Med4 > Med2 > Med1) |
| Our approach | (1.93, 1.82, 2.50, 2.14) | (Med3 > Med4 > Med1 > Med2) |