Evaluation of Waterlogging Risk in an Urban Subway Station

Table 2

1∼9 scaling method.

Scale of importance	Definition
1	Factors i and j are equally important
3	Factor i is slightly more important than factor j
5	Factor i is more important than factor j
7	Factor i is much more important than factor j
9	Factor i is absolutely more important than factor j
2, 4, 6, 8	The scale values corresponding to the intermediate states between the above adjacent judgments
1/ (reciprocal)	Judged value is obtained by comparing factor j with factor i