Table 2 Membership degree corresponding to each class and score.

From: An interpretable framework for risk management in TBM excavation using expert elicitation integrated with fuzzy set theory

Membership degree

Score

1

2

3

4

5

6

7

8

9

10

11

12 

Class

None [N]

1

1

2/3

1/3

0

0

0

0

0

0

0

0

Low [L]

0

0

1/3

2/3

1

2/3

1/3

0

0

0

0

0

Medium [M]

0

0

0

0

0

1/3

2/3

1

2/3

1/3

0

0

High [H]

0

0

0

0

0

0

0

0

1/3

2/3

1

1

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