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Beyond Condorcet: optimal aggregation rules using voting records

  • Eyal Baharad

    ()

  • Jacob Goldberger

    ()

  • Moshe Koppel

    ()

  • Shmuel Nitzan

    ()

The difficulty of optimal decision making in uncertain dichotomous choice settings is that it requires information on the expertise of the decision makers (voters). This paper presents a method of optimally weighting voters even without testing them against questions with known right answers. The method is based on the realization that if we can see how voters vote on a variety of questions, it is possible to gauge their respective degrees of expertise by comparing their votes in a suitable fashion, even without knowing the right answers.

(This abstract was borrowed from another version of this item.)

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File URL: http://hdl.handle.net/10.1007/s11238-010-9240-5
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Article provided by Springer in its journal Theory and Decision.

Volume (Year): 72 (2012)
Issue (Month): 1 (January)
Pages: 113-130

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Handle: RePEc:kap:theord:v:72:y:2012:i:1:p:113-130
Contact details of provider: Web page: http://www.springerlink.com/link.asp?id=100341

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  1. Ben-Yashar, Ruth C & Nitzan, Shmuel I, 1997. "The Optimal Decision Rule for Fixed-Size Committees in Dichotomous Choice Situations: The General Result," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 38(1), pages 175-86, February.
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  8. Ronen Bar-El & Teresa García-Muñoz & Shoshana Neuman & Yossef Tobol, 2010. "The Evolution of Secularization: Cultural Transmission, Religion and Fertility. Theory, Simulations and Evidence," Papers on Economics of Religion 10/03, Department of Economic Theory and Economic History of the University of Granada..
  9. Daniel Berend & Jacob Paroush, 1998. "When is Condorcet's Jury Theorem valid?," Social Choice and Welfare, Springer, vol. 15(4), pages 481-488.
  10. Leonid V. Azarnert, 2008. "Involuntary Integration in Public Education, Fertility and Human Capital," Working Papers 2008-07, Bar-Ilan University, Department of Economics.
  11. Fishburn, Peter C., 1978. "Axioms for approval voting: Direct proof," Journal of Economic Theory, Elsevier, vol. 19(1), pages 180-185, October.
  12. Ruth Ben-Yashar & Igal Milchtaich, 2007. "First and second best voting rules in committees," Social Choice and Welfare, Springer, vol. 29(3), pages 453-486, October.
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  15. List, Christian & Pettit, Philip, 2002. "Aggregating Sets of Judgments: An Impossibility Result," Economics and Philosophy, Cambridge University Press, vol. 18(01), pages 89-110, April.
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