Open AccessReflections on Common Misunderstandings When Using AHP and a Response to Criticism of Saaty’s Consistency Index
Author(s) -
Claudio Garuti
Publication year - 2018
Publication title -
international journal of the analytic hierarchy process
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 3
ISSN - 1936-6744
DOI - 10.13033/ijahp.v10i3.573
Subject(s) - analytic hierarchy process , criticism , computer science , consistency (knowledge bases) , epistemology , scale (ratio) , index (typography) , management science , operations research , artificial intelligence , mathematics , philosophy , law , political science , world wide web , physics , quantum mechanics , economics
This essay deals with misunderstandings which, in this author’s opinion, seem to prevail in the minds of some AHP critics. The main apparent problem is the lack of necessary knowledge about the scale concept including what a scale is, how it is mathematically defined, and what one can or cannot do with a scale. This knowledge is critical for a good understanding of AHP. This study will review the concept of scales, discuss common misconceptions, introduce the compatibility index G and explain how it addresses one of the previous fallacies perpetuated about AHP.