Quality Risk Evaluation of Urban Rail Transit Construction Based on AHP–FCE Method

Table 2

Nine-level scale method.

Degree of importance	Definition
1	Factor i is as important as factor j
3	Factor i is slightly more important than factor j
5	Factor i is more important than factor j
7	Factor i is significantly more important than factor j
9	Factor i is far more important than factor j
2, 4, 6, 8	Intermediate evaluation value
Reciprocal	If the judgement of factor i compared with factor j is bij, then bij·bji = 1