A Multicriteria Decision Model Based on Analytic Hierarchy Process for Managing Safety in Coal Mines

Table 1

Judgement matrix scale.

Relative importance	Definition
1	Factor is just as important as factor when compared to each other
3	Factor is slightly more important than factor
5	Factor is more important than factor
7	Factor is significantly more important than factor
9	Factor is extremely more important than factor
2, 4, 6, 8	Median value of factors and
Positive reciprocal matrix