Edasi saadakse iga eksperdi hinnangute alusel nn paariti võrdluse maatriks (ingl pairwise comparison matrix), mille leitav omavektor annab iga kriteeriumi jaoks niisuguse kaalu, mis sobib hinnangutega kõige paremini.
A well-established procedure for assigning weights to a set of factors, which may correspond to the layers of overlay, is Saaty's Analytical Hierarchy Process (AHP), which builds a matrix of pairwise comparisons (ratios) between the factors.
