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A gradient method for inconsistency reduction of pairwise comparisons matrices (2108.04034v2)
Published 4 Aug 2021 in math.RA, cs.NA, math.NA, math.OC, math.ST, and stat.TH
Abstract: We investigate an application of a mathematically robust minimization method -- the gradient method -- to the consistencization problem of a pairwise comparisons (PC) matrix. Our approach sheds new light on the notion of a priority vector and leads naturally to the definition of instant priority vectors. We describe a sample family of inconsistency indicators based on various ways of taking an average value, which extends the inconsistency indicator based on the "$\sup$"- norm. We apply this family of inconsistency indicators both for additive and multiplicative PC matrices to show that the choice of various inconsistency indicators lead to non-equivalent consistencization procedures.