Information Technology and Quantitative Management (ITQM 2017): An alternative calculation of the consensus degree in group decision making problems
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AuthorMoral Ávila, María José Del; Chiclana Parrilla, Francisco; Tapia García, Juan Miguel; Herrera-Viedma, E.
Elsevier B. V.
Group decision makingFuzzy preferencesConsensusDecision support rulesDistance functionsMean absolute deviation
M. J. del Moral. et. al. Information Technology and Quantitative Management (ITQM 2017): An alternative calculation of the consensus degree in group decision making problems. Procedia Computer Science 122 (2017) 735–742 [http://hdl.handle.net/10481/52138]
SponsorshipThe authors would like to acknowledge FEDER financial support from the Project TIN2016-75850-R.
In a problem of group decision-making it is desirable to obtain a solution with the highest possible degree of agreement – consensus- among the participants. For this aim, it is necessary to have tools that facilitate the calculation of the degree of consensus in a reliable way. This study proposes a consensus index based on a statistical measure of variability of the preferences expressed by the experts in a group decision-making process and performs a specific comparative study between this index and several known consensus measures. The analysis shows that in this specific situation the proposed measure behaves in a similar way to the previous ones and it could play their role in a process of decision making in group.