Group Decision and Negotiation

, Volume 21, Issue 2, pp 185–204

The Use of Ranking Veto Concept to Mitigate the Compensatory Effects of Additive Aggregation in Group Decisions on a Water Utility Automation Investment

  • Suzana de Suzana Dantas Daher
  • Adiel Teixeira de Almeida

DOI: 10.1007/s10726-011-9266-2

Cite this article as:
Daher, S..S.D. & de Almeida, A.T. Group Decis Negot (2012) 21: 185. doi:10.1007/s10726-011-9266-2


The use of additive models for aggregating group decisions implies they have a compensatory effect in the process of aggregating all decision makers’ (DMs’) preferences. In this kind of model, the final result may produce some extremely undesirable alternatives for one or more DMs. Such alternatives may emerge with a higher ranking than desirable ones, thus generating conflicts and regrets. To overcome this problem the concept of ranking veto is introduced based on a reduction factor combined with the utility of the alternative in order to penalize conflicting alternatives and reduce disagreements in an additive model. A water utility problem was considered as a numerical application to illustrate the model. A decision group method based on MAUT, utility thresholds and a reduction factor is proposed to support group decision in selecting regions that will receive investments in automation over the next 4 years.


Group decision MAUT Ranking veto concept Utility threshold Investment in water utilities 

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Suzana de Suzana Dantas Daher
    • 1
  • Adiel Teixeira de Almeida
    • 1
  1. 1.Federal University of PernambucoRecifeBrazil

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