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21.
Efe A. Ok Pietro Ortoleva Gil Riella 《Econometrica : journal of the Econometric Society》2012,80(4):1791-1808
We investigate the classical Anscombe–Aumann model of decision‐making under uncertainty without the completeness axiom. We distinguish between the dual traits of “indecisiveness in beliefs” and “indecisiveness in tastes.” The former is captured by the Knightian uncertainty model, the latter by the single‐prior expected multi‐utility model. We characterize axiomatically the latter model. Then we show that, under independence and continuity, these two models can be jointly characterized by means of a partial completeness property. 相似文献
22.
Summary This paper introduces a Bayesian nonparametric estimator for an unknown distribution function based on left censored observations.
Hjort (1990)/Lo (1993) introduced Bayesian nonparametric estimators derived from beta/beta-neutral processes which allow for
right censoring. These processes are taken as priors from the class ofneutral to the right processes (Doksum, 1974). The Kaplan-Meier nonparametric product limit estimator can be obtained from these Bayesian nonparametric
estimators in the limiting case of a vague prior.
The present paper introduces what can be seen as the correspondingleft beta/beta-neutral process prior which allow for left censoring. The Bayesian nonparametyric estimator is obtained as in the
corresponding product limit estimator based on left censored data. 相似文献
23.
Summary The Zenga index,
, is shown to be a concentration index, in the sense that, ifX andY are non negative random variables with 0<E(X), E(Y)<+∞, then
(X)⩾
(Y) whenever the Lorenz curves satisfyL
x(p)≤L
y(p) for all p.
Research partially supported by: M.U.R.S.T. 40% ?Inferenza statistica: basi probabilistiche e sviluppi metodologici?. 相似文献
24.
In the last decade much attention has been devoted to developing performance measurement systems (PMS), which could encompass both financial and non-financial measures. Many frameworks have been conceived in order to allow companies to better evaluate their own performance by means of collected data, but few attempts have been made to provide public and non-profit organizations with PMS devoted explicitly for their needs. The aims of this paper are to review the frameworks currently developed and implemented in public and non-profit organizations and to identify the requirements of a framework, which can be applied in this context. 相似文献
25.
Dagum and Slottje (2000) estimated household human capital (HC) as a latent variable (LV) and proposed its monetary estimation by means of an actuarial approach. This paper introduces an improved method for the estimation of household HC as an LV by means of formative and reflective indicators in agreement with the accepted economic definition of HC. The monetary value of HC is used in a recursive causal model to obtain short- and long-term multipliers that measure the direct and total effects of the variables that determine household HC. The new method is applied to estimate US household HC for year 2004. 相似文献
26.
Giancarlo Diana Marco Giordan Pier Francesco Perri 《Statistical Methods and Applications》2011,20(2):123-140
Starting from the Rao (Commun Stat Theory Methods 20:3325–3340, 1991) regression estimator, we propose a class of estimators for the unknown mean of a survey variable when auxiliary information
is available. The bias and the mean square error of the estimators belonging to the class are obtained and the expressions
for the optimum parameters minimizing the asymptotic mean square error are given in closed form. A simple condition allowing
us to improve the classical regression estimator is worked out. Finally, in order to compare the performance of some estimators
with the regression one, a simulation study is carried out when some population parameters are supposed to be unknown. 相似文献
27.
Pietro Di Paola 《Immigrants & Minorities》2017,35(3):177-195
AbstractThis article engages with questions of the integration of different scales of analysis in the study of labour and radical movements: ‘transnational’, ‘national’ and ‘local’ or ‘trans-local’. The article places the study of transnational anarchism in a ‘national’ and ‘trans-local’ perspective. The analysis of the intersection between the networks of those who migrated from Italy and those who remained provides a fruitful means to uncover dynamics within the transnational anarchist movement and the interplay, in both directions, between home country, exile communities and host countries. The article focuses on the crucial, but still unexplored, contributions of communities of Italian anarchists abroad (in, among other places, London, Paris, Berne, Marseille, Barre and Buenos Aires) to the anti-militarist campaigns against the Italian colonial enterprise in Libya from 1911 to 1914, in terms of propaganda, theoretical debate, financing and countercultural production. The investigation of the initiatives of anarchist exiles and how they coordinated with their comrades in Italy provides a significant case study, not only to understand network-based transnational anarchism but also to reflect on mechanisms of political migration and their influence on the development of social conflicts. 相似文献
28.
M. Giordan F. Vaggi R. Wehrens 《Journal of Statistical Computation and Simulation》2017,87(5):895-907
The Levenberg–Marquardt algorithm is a flexible iterative procedure used to solve non-linear least-squares problems. In this work, we study how a class of possible adaptations of this procedure can be used to solve maximum-likelihood problems when the underlying distributions are in the exponential family. We formally demonstrate a local convergence property and discuss a possible implementation of the penalization involved in this class of algorithms. Applications to real and simulated compositional data show the stability and efficiency of this approach. 相似文献
29.
On Stable Population Theory With Immigration 总被引:1,自引:0,他引:1
Pietro Cerone 《Demography》1987,24(3):431-438
The paper extends stable population theory to include a constant stream of immigration. Previous attempts at tackling the problem have either restricted themselves to a below-replacement native population or else used an approach that does not produce the values of all of the parameters explicitly. It is shown that under a constant stream of immigration, the population will asymptotically tend toward a constant, linear, or exponential behavior, depending on whether the fertility behavior is below, equal to, or above replacement level. All of the parameters are determined in terms of the characteristics of the population at the origin. 相似文献
30.
Dagum and Slottje (2000) estimated household human capital (HC) as a latent variable (LV) and proposed its monetary estimation by means of an actuarial approach. This paper introduces an improved method for the estimation of household HC as an LV by means of formative and reflective indicators in agreement with the accepted economic definition of HC. The monetary value of HC is used in a recursive causal model to obtain short- and long-term multipliers that measure the direct and total effects of the variables that determine household HC. The new method is applied to estimate US household HC for year 2004. 相似文献