Predictive Analysis of Settlement Risk in Tunnel Construction: A Bow-Tie-Bayesian Network Approach

Table 8

Rank value of each category.

Classified occurrence probability	Rank value
Nonoccurrence	0
Absolute low	0.1
Very low	0.2
Low	0.3
Fairly low	0.4
Medium	0.5
Fairly high	0.6
High	0.7
Very high	0.8
Absolute high	0.9
Occurrence	1.0