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Measuring consensus in a preference-approval context

Bora Erdamar, José Luis García-Lapresta, David Pérez-Roman and Remzi Sanver ()
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Bora Erdamar: X-DEP-ECO - Département d'Économie de l'École Polytechnique - X - École polytechnique, Istanbul Bilgi University
David Pérez-Roman: PRESAD Research Group - UVa - Universidad de Valladolid [Valladolid]

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Abstract: We consider measuring the degree of homogeneity for preference-approval profiles which include the approval information for the alternatives as well as the rankings of them. A distance-based approach is followed to measure the disagreement for any given two preference-approvals. Under the condition that a proper metric is used, we propose a measure of consensus which is robust to some extensions of the ordinal framework. This paper also shows that there exists a limit for increasing the homogeneity level in a group of individuals by simply replicating their preference-approvals.

Keywords: Consensus; Approval voting; Preference-approval; Kemeny metric; Hamming metric (search for similar items in EconPapers)
Date: 2012-03-21
New Economics Papers: this item is included in nep-cdm
Note: View the original document on HAL open archive server: https://hal.science/hal-00681297
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