D2

E4

E5

E6

Indicator weight WD2

Consistency test

E4

1

2

3

0.528

λ_max = 3.054

E5 1 3

1/2

1

3

0.332

RI = 0.58

E6

1/3

1/3

1

0.140

CR = 0.0155 < 0.1 Satisfy consistency