AHP calls for the following steps:
The methodology of the AHP technique can be
explained in the following steps:
Step 1: Divide the problem into a hierarchy of
goals, criteria, sub-criteria, and alternatives.
Step 2: Enter input data into the Pairwise
Comparison Matrix to determine the weights
for comparing various criteria.
Step 3: Estimate the weights through the
Geometric Mean.
Step 4: Set the weights with respect to the criteria
or sub-criteria and ratings with respect to the
alternatives.
Step 5: Estimate consistency. If the consistency
ratio (CR) is greater than 0.1, it means this is
incorrect data. If the CR is less than 0.1, it means it
is correct data. The CR can be calculated as: