Selection of an Appropriate Mechanized Mining Technical Process for Thin Coal Seam Mining

Table 2

Scale for pairwise comparisons.

Relative intensity	Definition	Explanation
1	Of equal value	Two requirements are of equal value
3	Slightly higher value	Experience slightly favors one requirement over another
5	Essential or strong value	Experience strongly favors one requirement over another
7	Very strong value	A requirement is strongly favored and its dominance is demonstrated in practice
9	Extreme value	The evidence favoring one over another is of the highest possible order of affirmation
2, 4, 6, and 8	Intermediate values between two adjacent judgments	When compromise is needed