An improvement on Saaty's AHP

Abstract

AHP is a commonly used method in analyzing multi-factor evaluation or multi-attribute decision-making problems. However, AHP has some serious logistic mistakes. Since it cannot maintain the independence of alternatives, AHP cannot lead to an ordering of alternatives that is consistent with their ordering before the values of the assessments or the quantity of alternatives change. Therefore, using a numerical illustration, the mistake of traditional AHP is found out. An improvement on AHP which can keep the consistency of the alternatives' ordering results is put forward in this paper. © 2005 by International Federation for Information Processing.