Mathematical Problems in Engineering / 2015 / Article / Tab 2

Research Article

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

Table 2

Scale for pairwise comparisons.

Relative intensity DefinitionExplanation

1Of equal valueTwo requirements are of equal value

3Slightly higher valueExperience slightly favors one requirement over another

5Essential or strong valueExperience strongly favors one requirement over another

7Very strong valueA requirement is strongly favored and its dominance is demonstrated in practice

9Extreme valueThe evidence favoring one over another is of the highest possible order of affirmation

2, 4, 6, and 8Intermediate values between two adjacent judgmentsWhen compromise is needed