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481.
Log Gaussian Cox Processes 总被引:10,自引:0,他引:10
Jesper Møller Anne Randi Syversveen & Rasmus Plenge Waagepetersen 《Scandinavian Journal of Statistics》1998,25(3):451-482
Planar Cox processes directed by a log Gaussian intensity process are investigated in the univariate and multivariate cases. The appealing properties of such models are demonstrated theoretically as well as through data examples and simulations. In particular, the first, second and third-order properties are studied and utilized in the statistical analysis of clustered point patterns. Also empirical Bayesian inference for the underlying intensity surface is considered. 相似文献
482.
Peter Müller Don A. Berry Andy P. Grieve Michael Smith Michael Krams 《Journal of statistical planning and inference》2007
We consider simulation-based methods for exploration and maximization of expected utility in sequential decision problems. We consider problems which require backward induction with analytically intractable expected utility integrals at each stage. We propose to use forward simulation to approximate the integral expressions, and a reduction of the allowable action space to avoid problems related to an increasing number of possible trajectories in the backward induction. The artificially reduced action space allows strategies to depend on the full history of earlier observations and decisions only indirectly through a low dimensional summary statistic. The proposed rule provides a finite-dimensional approximation to the unrestricted infinite-dimensional optimal decision rule. We illustrate the proposed approach with an application to an optimal stopping problem in a clinical trial. 相似文献
483.
Chris Elbers Peter Lanjouw Johan A. Mistiaen Berk Özler 《Journal of Economic Inequality》2008,6(3):231-245
We evaluate observed inequality between population groups against a benchmark of the maximum between-group inequality attainable
given the number and relative sizes of those groups under examination. Because our measure is normalized by these parameters,
drawing comparisons across different settings is less problematic than with conventional inequality decompositions. Moreover,
our measure can decline with finer sub-partitioning of population groups. Consequently, the exact manner in which one groups
the population acquires greater significance. Survey data from various countries suggest that our approach can provide a complementary
perspective on the question of whether (and how much) a particular population breakdown is salient to an assessment of inequality
in a country.
An erratum to this article can be found at 相似文献
484.
The concept of “site” is at the center of current debates in theories of social practices as well as in cultural anthropology. It is unclear, however, how to assess the associated methodological assumption that overriding social structures or cultural formations can manifest themselves in sites. The article draws on the conception of social practices and introduces the notion of “publicness” in order to explicate how and why sociality and social structures can be accessed through “siting”. Sites as well as social practices, it is claimed, have to be conceptualized as essentially public and thus principally observable phenomena. This assumption of publicness implicit to both site ontology and theories of social practices is unfolded on the basis of a praxeological reformulation of the paradigm of joint attention elaborated in developmental psychology. To avoid presentist misinterpretations, we then conceptualize sociality as chains of practices across time and space, drawing on the works of Theodore Schatzki, Ludwig Wittgenstein, Anthony Giddens and Bruno Latour. The public carriers of practices (artifacts, symbols, media, bodies) and the translocal structures they establish acquire particular significance in these approaches. In a further step, we present some methodological consequences of the “publicness assumption” and support our arguments by referring to Pierre Bourdieu's study on Distinction. 相似文献
485.
Katharina Müller 《International Journal of Social Welfare》2009,18(2):163-172
Bolivia is the only Latin American country to feature a universal old-age pension scheme. Though strikingly modest, originating at US$248 per annum, this benefit runs counter to the prevailing targeting paradigm. Ten years after the scheme's controversial start in South America's poorest country, this article is the first to focus on the interesting political economy of the universal benefit. The introduction of the benefit was not motivated by social policy considerations but by the desire to privatise state-owned enterprises and pensions. Conceived by neoliberal structural reformers, the benefit was challenged first by the international financial institutions and then by Bolivia's developmentalist government, before the latter found a way to reconcile its re-nationalisation project with a re-branded universal pension. 相似文献
486.
Denecke and Müller (CSDA 55:2724–2738, 2011) presented an estimator for the correlation coefficient based on likelihood depth for Gaussian copula and Denecke and Müller (J Stat Planning Inference 142: 2501–2517, 2012) proved a theorem about the consistency of general estimators based on data depth using uniform convergence of the depth measure. In this article, the uniform convergence of the depth measure for correlation is shown so that consistency of the correlation estimator based on depth can be concluded. The uniform convergence is shown with the help of the extension of the Glivenko-Cantelli Lemma by Vapnik- C? ervonenkis classes. 相似文献
487.
Birgit Heydenreich Rudolf Müller Marc Uetz Rakesh V. Vohra 《Econometrica : journal of the Econometric Society》2009,77(1):307-316
The property of an allocation rule to be implementable in dominant strategies by a unique payment scheme is called revenue equivalence. We give a characterization of revenue equivalence based on a graph theoretic interpretation of the incentive compatibility constraints. The characterization holds for any (possibly infinite) outcome space and many of the known results are immediate consequences. Moreover, revenue equivalence can be identified in cases where existing theorems are silent. 相似文献
488.
Rafael Lalive Jan C. van Ours Josef Zweimüller 《Journal of the European Economic Association》2005,3(6):1386-1417
This paper investigates the effectiveness of unemployment benefit sanctions in reducing unemployment duration. Swiss data on benefit sanctions allow us to separate the effect of a warning that a person is not complying with eligibility requirements from the effect of the actual enforcement of a benefit sanction. Moreover, public employment services are given substantial leeway in setting the monitoring intensity. Results indicate that both warning and enforcement have a positive effect on the exit rate out of unemployment, and that increasing the monitoring intensity reduces the duration of unemployment of the nonsanctioned. (JEL: J64, J65, J68) 相似文献
489.
Per M. Brockhoff & Hans-Georg Müller 《Journal of the Royal Statistical Society. Series B, Statistical methodology》1997,59(2):431-446
A random threshold model for dose--response designs with repeated measurements is introduced. Inference procedures for this model are discussed. The framework of generalized linear models is used to propose a quasi-likelihood inference procedure. The feasibility of this approach is illustrated with the analysis of food science data concerning a forced choice sensory experiment. 相似文献
490.
Elisabeth?AnkerEmail author Heidi?M?ller 《Gruppendynamik und Organisationsberatung》2004,35(3):319-334
“How can I successfully offer my counseling services to the market?”. The question of promoting oneself is a crucial one, not only for counselors at the beginning of their career but also for experienced colleagues. The problem of attracting clients occupies counselors and supervisors at different levels: At the personality level as well as at the professional and role understanding level. Promoting oneself implies “selling” one’s performance and ability and therefore touches topics which are normally taboo: money, market, ethics, self-respect, competition and status. 相似文献