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arXiv: 1602.01581
handle: 2117/97663
Voting is a commonly applied method for the aggregation of the preferences of multiple agents into a joint decision. If preferences are binary, i.e., “yes” and “no”, every voting system can be described by a (monotone) Boolean function χ:{0,1}n→{0,1}. However, its naive encoding needs 2nbits. The subclass of threshold functions, which is sufficient for homogeneous agents, allows a more succinct representation using n weights and one threshold. For heterogeneous agents, one can represent χ as an intersection of k threshold functions. Taylor and Zwicker have constructed a sequence of examples requiringand provided a construction guaranteeing. The magnitude of the worst-case situation was to be determined by Elkind et al. in 2008, but the analysis unfortunately turned out to be wrong. Here we uncover a relation to coding theory that allows the determination of the minimum number k for a subclass of voting systems. As an application, we give a construction for k≥2n−o(n), i.e., there is no gain from a representation complexity point of view.
Classificació AMS::91 Game theory, economics, social and behavioral sciences::91B Mathematical economics, FOS: Computer and information sciences, Computer Science - Information Theory, :68 Computer science::68P Theory of data [Classificació AMS], Computer Science - Computer Science and Game Theory, :91 Game theory, economics, social and behavioral sciences::91B Mathematical economics [Classificació AMS], FOS: Mathematics, Mathematics - Combinatorics, 91B12, 91A12, 68P30, Vot -- Models matemàtics, Jocs, Teoria de, Classificació AMS::91 Game theory, economics, social and behavioral sciences::91A Game theory, :Matemàtiques i estadística::Investigació operativa::Teoria de jocs [Àrees temàtiques de la UPC], Game theory, Classificació AMS::68 Computer science::68P Theory of data, Information Theory (cs.IT), Àrees temàtiques de la UPC::Matemàtiques i estadística::Investigació operativa::Teoria de jocs, :91 Game theory, economics, social and behavioral sciences::91A Game theory [Classificació AMS], Voting--Mathematical models, Combinatorics (math.CO), Computer Science and Game Theory (cs.GT)
Classificació AMS::91 Game theory, economics, social and behavioral sciences::91B Mathematical economics, FOS: Computer and information sciences, Computer Science - Information Theory, :68 Computer science::68P Theory of data [Classificació AMS], Computer Science - Computer Science and Game Theory, :91 Game theory, economics, social and behavioral sciences::91B Mathematical economics [Classificació AMS], FOS: Mathematics, Mathematics - Combinatorics, 91B12, 91A12, 68P30, Vot -- Models matemàtics, Jocs, Teoria de, Classificació AMS::91 Game theory, economics, social and behavioral sciences::91A Game theory, :Matemàtiques i estadística::Investigació operativa::Teoria de jocs [Àrees temàtiques de la UPC], Game theory, Classificació AMS::68 Computer science::68P Theory of data, Information Theory (cs.IT), Àrees temàtiques de la UPC::Matemàtiques i estadística::Investigació operativa::Teoria de jocs, :91 Game theory, economics, social and behavioral sciences::91A Game theory [Classificació AMS], Voting--Mathematical models, Combinatorics (math.CO), Computer Science and Game Theory (cs.GT)
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