shows the values of the objective function with the selection
of each alternative, with x5 shown as the best choice with an
objective value of 1.705, and x3 is the least favorable choice with
an objective value of 12.394. For comparison, we constructed the
GP model with AHP alone (AHP–GP) and solved the same problem.
The AHP–GP model yielded a different decision result from the
AHP–PCA–GP model in that the optimal solution of the AHP–GP
model is x6 with an objective value of 2.295.