Recently, there is a focus on the integration of AHP with other tools such as quality function
deployment, SWOTanalysis, and data examination for optimum performance (Ho, 2008). On
the other hand, examples difficulties of the AHP may be: a possibility of different hierarchies
being applied to identical problems, major changes in results may occur if the hierarchy is
changed slightly, and the absence of statistical theory that underlie the process (Dyer, 1990)
and that the AHP method needs more validation (Holder, 1990). Nevertheless, Saaty (1991)
responded to Holder’s comment as inequity explored speculations.