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1.
Dietrich Stoyan Helga Stoyan Gunter Döge 《Australian & New Zealand Journal of Statistics》2004,46(1):67-77
This paper reports on the mixing of Euro coins from different countries of origin in Europe, which started on 1 January 2002. There is an interesting conclusion: that the mobility of small and large denominations is different. The long‐term behaviour of the mixing process is studied using a simple deterministic model and data from Germany, France and the Netherlands. The analysis leads to predictions about the future progress of the mixing process. 相似文献
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Approximation of a density by another density is considered in the case of different dimensionalities of the distributions. The results have been derived by inverting expansions of characteristic functions with the help of matrix techniques. The approximations obtained are all functions of cumulant differences and derivatives of the approximating density. The multivariate Edgeworth expansion follows from the results as a special case. Furthermore, the density functions of the trace and eigenvalues of the sample covariance matrix are approximated by the multivariate normal density and a numerical example is given 相似文献
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The impossibility of unbiased judgment aggregation 总被引:1,自引:0,他引:1
Standard impossibility theorems on judgment aggregation over logically connected propositions either use a controversial systematicity condition or apply only to agendas of propositions with rich logical connections. Are there any serious impossibilities without these restrictions? We prove an impossibility theorem without requiring systematicity that applies to most standard agendas: Every judgment aggregation function (with rational inputs and outputs) satisfying a condition called unbiasedness is dictatorial (or effectively dictatorial if we remove one of the agenda conditions). Our agenda conditions are tight. When applied illustratively to (strict) preference aggregation represented in our model, the result implies that every unbiased social welfare function with universal domain is effectively dictatorial. 相似文献
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Judgment aggregation without full rationality 总被引:1,自引:1,他引:0
Several recent results on the aggregation of judgments over logically connected propositions show that, under certain conditions,
dictatorships are the only propositionwise aggregation functions generating fully rational (i.e., complete and consistent)
collective judgments. A frequently mentioned route to avoid dictatorships is to allow incomplete collective judgments. We
show that this route does not lead very far: we obtain oligarchies rather than dictatorships if instead of full rationality
we merely require that collective judgments be deductively closed, arguably a minimal condition of rationality, compatible
even with empty judgment sets. We derive several characterizations of oligarchies and provide illustrative applications to
Arrowian preference aggregation and Kasher and Rubinstein’s group identification problem.
This paper was circulated in August 2006 and presented at the Yale workshop on Aggregation of Opinions, September 2006, at
the Centre interuniversitaire de rechere en économie quantitative, Montreal, October 2006, and at the 1st International Workshop
on Computational Social Choice, Amsterdam, December 2006. We are grateful to the participants at these occasions and the anonymous
referees for comments. We also thank Ton Storcken for discussion. Elad Dokow and Ron Holzman have independently proved closely
related results, which were also presented at the Yale workshop in September 2006, and circulated in the December 2006 paper
(Dokow and Holzman 2006). 相似文献
10.
An inverse regression approach to analyzing quantal response assays with one quanritative independent- variable and any number of qualitative independent variables is presented. A general factorial model ror LQC- inverted relationship and methods of testing hypotheses estimating qulitative Interest are developed. This naper provides a modified method of analysis which is easier to apply than previously existing methods. 相似文献