Nature and statistics of majority rankings in a dynamical model of preference aggregation (Articolo in rivista)

Type
Label
  • Nature and statistics of majority rankings in a dynamical model of preference aggregation (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.physa.2007.10.046 (literal)
Alternative label
  • G.L. Columbu (a); A. De Martino (a,b); A. Giansanti (a) (2008)
    Nature and statistics of majority rankings in a dynamical model of preference aggregation
    in Physica. A (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G.L. Columbu (a); A. De Martino (a,b); A. Giansanti (a) (literal)
Pagina inizio
  • 1338 (literal)
Pagina fine
  • 1344 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 387 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5-6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (a) Dipartimento di Fisica, Università di Roma 'La Sapienza', Ple A. Moro 2, 00185 Roma, Italy (b) INFM-CNR (ISC), Roma, Italy (literal)
Titolo
  • Nature and statistics of majority rankings in a dynamical model of preference aggregation (literal)
Abstract
  • We present numerical results on a complex dynamical model for the aggregation of many individual rankings of S alternatives by the pairwise majority rule under a deliberative scenario. Agents are assumed to interact when the Kemeny distance between their rankings is smaller than a range R. The main object of interest is the probability that the aggregate (social) ranking is transitive as a function of the interaction range. This quantity is known to decay fast as S increases in the non-interacting case. Here we find that when S > 4 such a probability attains a sharp maximum when the interaction range is sufficiently large, in which case it significantly exceeds the corresponding value for a non-interacting system. Furthermore, the situation improves upon increasing S. A possible microscopic mechanism leading to this counterintuitive result is proposed and investigated. (c) 2007 Elsevier B.V. All rights reserved. (literal)
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