There have been a lot of constant studies about the Analytic Hierarchy Process decision-making method since Thomas L. Saaty , professor of University of Pennsylvania had suggested. Complexity and diversity in modern society are increasing the difficul...
There have been a lot of constant studies about the Analytic Hierarchy Process decision-making method since Thomas L. Saaty , professor of University of Pennsylvania had suggested. Complexity and diversity in modern society are increasing the difficulty for decision-making. To get over the hardship, AHP is widely used through hierarchism and simplification among alternatives. In addition, we can give the final result validation because we can measure the consistency of responses in pairwise comparison of AHP. But, some studies propose there are some of the different opinions in relation to followings.
First, it is an experienced index, instead of a mathematical index in Consistency Rate.
Second, the meaning of Consistency Rate is uncertain, for there is no evidence that the distribution of the Consistency Index is a Normal distribution.
This study examines the theoretical background, meanings, some opinions in the consistency check of general AHP. We also show the new consistency check using the Duplex Outranking Method.
The Duplex Outranking Method is a comparative method between preorder symbolized superiority and backorder symbolized inferiority among alternatives; the consistency check is performed by Spearman rank correlation. We could get the similar result to the previous ones through this test.
As a result, this proposed consistency check can make check procedure, interpretation, design of a level of consistency more easily.