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Table 1

Saaty's lineal scale of preferences in the pair-wise comparison process

Numerical ratingJudgments of preferences between factor i and j rating
Factor i is equally important to factor j 
Factor i is slightly more important than factor j 
Factor i is clearly more important than factor j 
Factor i is strongly more important than factor j 
Factor i is extremely more important than factor j 
2, 4, 6, 8 Intermediate values 
Numerical ratingJudgments of preferences between factor i and j rating
Factor i is equally important to factor j 
Factor i is slightly more important than factor j 
Factor i is clearly more important than factor j 
Factor i is strongly more important than factor j 
Factor i is extremely more important than factor j 
2, 4, 6, 8 Intermediate values 
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