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Table 6 Summary of pairwise comparison values

From: Optimal overlays for preservation of concrete in cold climate: decision-making by the method of fuzzy comprehensive evaluation combined with AHP

Intensity of importance

Definition

Explanation

1

Equal importance

Two activities contributed equally to the objective

2

Weak importance

Experience and judgment slightly favored one activity over another

5

Absolute importance

The evidence that favored one activity over another was of the highest possible order of affirmation

Reciprocals of previous nonzero

If activity i has one of the previous nonzero numbers assigned to it when compared with activity j, then j has the reciprocal value when compared with i