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Table 1 Definition of fuzzy numbers and corresponding membership functions for the fuzzy AHP

From: Determining the revenue contribution of logistics customer service improvements: a multi criteria decision making approach

Intensity of importance Fuzzy number Definition Membership function
1 1 ˜ Equally important (1, 1, 3)
3 3 ˜ Moderately more important (1, 3, 5)
5 5 ˜ Strongly more important (3, 5, 7)
7 7 ˜ Very strongly more important (5, 7, 9)
9 9 ˜ Extremely more important (7, 9, 9)