Table 3 Membership function of linguistic Scale.

From: Development of fuzzy-based ranking alternatives by hybrid RSM-fuzzy AHP-fuzzy CoCoSo framework sustainable ultrasonic-assisted turning of magnesium alloys

Fuzzy Number

9

8

7

6

5

4

3

2

1

Linguistic

Perfect -P

Absolute- A

Very Good -VG

Fairly Good - FG

Good -G

Preferable - P

Not Bad - NB

Weak Advantage - WA

Equal -E

The scale of the Fuzzy number

(8.9,10)

(7,8,9)

(6,7,8)

(5,6,7)

(4,5,6)

(3,4,5)

(2,3,4)

(1,2,3)

(1,1,1)

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