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Consistency of the decision-maker in pair-wise comparisons

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  • Jozsef Temesi

Abstract

Most authors assume that the natural behaviour of the decision-maker is being inconsistent. This paper investigates the main sources of inconsistency and analyses methods for reducing or eliminating inconsistency. Decision support systems can contain interactive modules for that purpose. In a system with consistency control, there are three stages. First, consistency should be checked: a consistency measure is needed. Secondly, approval or rejection has to be decided: a threshold value of inconsistency measure is needed. Finally, if inconsistency is 'high', corrections have to be made: an inconsistency reducing method is needed. This paper reviews the difficulties in all stages. An entirely different approach is to elaborate a decision support system in order to force the decision-maker to give consistent values in each step of answering pair-wise comparison questions. An interactive questioning procedure resulting in consistent (sub) matrices has been demonstrated.

Suggested Citation

  • Jozsef Temesi, 2006. "Consistency of the decision-maker in pair-wise comparisons," International Journal of Management and Decision Making, Inderscience Enterprises Ltd, vol. 7(2/3), pages 267-274.
    • Handle: RePEc:ids:ijmdma:v:7:y:2006:i:2/3:p:267-274
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    Cited by:

    1. Sándor Bozóki & Linda Dezső & Attila Poesz & József Temesi, 2013. "Analysis of pairwise comparison matrices: an empirical research," Annals of Operations Research, Springer, vol. 211(1), pages 511-528, December.
    2. Konrad Kułakowski, 2015. "A heuristic rating estimation algorithm for the pairwise comparisons method," Central European Journal of Operations Research, Springer;Slovak Society for Operations Research;Hungarian Operational Research Society;Czech Society for Operations Research;Österr. Gesellschaft für Operations Research (ÖGOR);Slovenian Society Informatika - Section for Operational Research;Croatian Operational Research Society, vol. 23(1), pages 187-203, March.

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