Table 4 Economical efficiency judgment matrix.

From: Coating matching recommendation based on improved fuzzy comprehensive evaluation and collaborative filtering algorithm

u2

C1

C2

C3

C4

Weight

Consistency test

C1

1

6

5

3

0.5577

λmax = 4.0788

C2

1/6

1

1/2

1/4

0.0705

CI = 0.0263

C3

1/5

2

1

1/3

0.1124

CR = 0.0295 < 0.1

C4

1/3

4

3

1

0.2594

 
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