Probabilistic comparison of weighted majority rules

Daniel Berend; Luba Bromberg; Luba Sapir

Applicationes Mathematicae (2012)

  • Volume: 39, Issue: 2, page 151-167
  • ISSN: 1233-7234

Abstract

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This paper studies a bi-parametric family of decision rules, so-called restricted distinguished chairman rules, which contains several one-parameter classes of rules considered previously in the literature. Roughly speaking, these rules apply to a variety of situations where the original committee appoints a subcommittee. Moreover, the chairman of the subcommittee, who is supposed to be the most competent committee member, may have more voting power than other jurors. Under the assumption of exponentially distributed decision skills, we obtain an analytic formula for the probability of any restricted distinguished chairman rule being optimal. We also study, for arbitrary fixed voting power of the chairman, the connection between the probability of the rule being optimal and the size of the subcommittee.

How to cite

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Daniel Berend, Luba Bromberg, and Luba Sapir. "Probabilistic comparison of weighted majority rules." Applicationes Mathematicae 39.2 (2012): 151-167. <http://eudml.org/doc/279903>.

@article{DanielBerend2012,
abstract = {This paper studies a bi-parametric family of decision rules, so-called restricted distinguished chairman rules, which contains several one-parameter classes of rules considered previously in the literature. Roughly speaking, these rules apply to a variety of situations where the original committee appoints a subcommittee. Moreover, the chairman of the subcommittee, who is supposed to be the most competent committee member, may have more voting power than other jurors. Under the assumption of exponentially distributed decision skills, we obtain an analytic formula for the probability of any restricted distinguished chairman rule being optimal. We also study, for arbitrary fixed voting power of the chairman, the connection between the probability of the rule being optimal and the size of the subcommittee.},
author = {Daniel Berend, Luba Bromberg, Luba Sapir},
journal = {Applicationes Mathematicae},
keywords = {uncertainty; simple majority rule; expert rule; chairman rule; optimality probability},
language = {eng},
number = {2},
pages = {151-167},
title = {Probabilistic comparison of weighted majority rules},
url = {http://eudml.org/doc/279903},
volume = {39},
year = {2012},
}

TY - JOUR
AU - Daniel Berend
AU - Luba Bromberg
AU - Luba Sapir
TI - Probabilistic comparison of weighted majority rules
JO - Applicationes Mathematicae
PY - 2012
VL - 39
IS - 2
SP - 151
EP - 167
AB - This paper studies a bi-parametric family of decision rules, so-called restricted distinguished chairman rules, which contains several one-parameter classes of rules considered previously in the literature. Roughly speaking, these rules apply to a variety of situations where the original committee appoints a subcommittee. Moreover, the chairman of the subcommittee, who is supposed to be the most competent committee member, may have more voting power than other jurors. Under the assumption of exponentially distributed decision skills, we obtain an analytic formula for the probability of any restricted distinguished chairman rule being optimal. We also study, for arbitrary fixed voting power of the chairman, the connection between the probability of the rule being optimal and the size of the subcommittee.
LA - eng
KW - uncertainty; simple majority rule; expert rule; chairman rule; optimality probability
UR - http://eudml.org/doc/279903
ER -

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