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The possibility of judgment aggregation for network agendas

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Author Info

  • Franz Dietrich

    (University of Konstanz, Germany)

Abstract

Within social choice theory, the new field of judgment aggregation aims at reaching collective judgments on a set of logically interconnected propositions. I investigate decision problems, in which the agenda is a network, composed of atomic propositions and connection rules between them. Networks can represent various realistic decision problems, including most concrete examples given in the literature. Nevertheless, networks are unexplored so far due to problems when modelling connection rules in standard propositional logic. By extending the logic, I prove that, for any network, decision rules satisfying the common conditions always exist, in contrast to the literature's emphasis on impossibilities. I also characterise the class of such decision rules, and propose a simple way to select a decision rule.

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File URL: http://128.118.178.162/eps/pe/papers/0504/0504002.pdf
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Bibliographic Info

Paper provided by EconWPA in its series Public Economics with number 0504002.

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Length: 20 pages
Date of creation: 05 Apr 2005
Date of revision:
Handle: RePEc:wpa:wuwppe:0504002

Note: Type of Document - pdf; pages: 20
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Web page: http://128.118.178.162

Related research

Keywords: judgment aggregation; collective inconsistency; possibility theorems; network; connection rule; formal logic; material conditional; subjunctive conditional;

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  1. Franz Dietrich & Christian List, 2004. "Strategy-proof judgment aggregation," Public Economics 0404007, EconWPA, revised 25 Jul 2005.
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Cited by:
  1. Franz Dietrich, 2005. "Judgment aggregation in general logics," Public Economics 0505007, EconWPA.
  2. Christian List & Ben Polak, 2010. "Introduction to Judgment Aggregation," Cowles Foundation Discussion Papers 1753, Cowles Foundation for Research in Economics, Yale University.

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