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71.
M. P. Wand 《Australian & New Zealand Journal of Statistics》2009,51(1):9-41
Semiparametric regression models that use spline basis functions with penalization have graphical model representations. This link is more powerful than previously established mixed model representations of semiparametric regression, as a larger class of models can be accommodated. Complications such as missingness and measurement error are more naturally handled within the graphical model architecture. Directed acyclic graphs, also known as Bayesian networks, play a prominent role. Graphical model-based Bayesian 'inference engines', such as bugs and vibes , facilitate fitting and inference. Underlying these are Markov chain Monte Carlo schemes and recent developments in variational approximation theory and methodology. 相似文献
72.
The European Social Survey, on which this issue of the journal focuses, is a 30-nation multi-funded survey series measuring
attitude change. Started in 2001, it is characterised by unusually high standards of sampling and data equivalence. Its data
are made available on-line with equal access to all, and have already attracted over 20,000 users. Many papers, articles and
books based on the ESS have already appeared. But none has yet employed the data—whether alone or with other sources—to derive
indicators of citizens’ cognitive judgements of their society. A recent EC grant is enabling the authors to fill this gap,
covering topics such as trust in national institutions, tolerance, social cohesion, social trust and fear of crime. The aim
is to be able to monitor changes over time in the distance between what citizens believe their society ought to be in these
respects and how they actually perceive it to be.
相似文献
Roger JowellEmail: |
73.
人口是社会生活的主体,人口发展是社会发展的重要组成部分。但度量社会发展的方法还存在一些难以解决的问题。利用现有的评价方法,尚不能全面准确地反映中国各民族人口发展的现状。为了更加全面准确地把握人口发展状态,构建了衡量人口发展的指标体系,按照这个指标体系,分析中国各民族人口的发展现状、各民族在发展过程中所处的位置,以及他们目前存在的突出问题。 相似文献
74.
Health research traditionally has focused on the health risks and deficits of lesbian, gay, bisexual, transgender, and queer (LGBTQ) populations, obscuring the determinants that can promote health across the life course. Recognizing, appropriately measuring, and rendering visible these determinants of health is paramount to informing appropriate and engaging health policies, services, and systems for LGBTQ populations. The overarching purpose of this article is to provide an overview of the findings of a scoping review aimed at exploring strengths-based health promotion approaches to understanding and measuring LGBTQ health. Specifically, this scoping review examined peer-reviewed, published academic literature to determine (a) existing methodological frameworks for studying LGBTQ health from a strengths-based health promotion approach, and (b) suggestions for future methodological approaches for studying LGBTQ health from a strengths-based health promotion approach. The findings of this scoping review will be used to inform the development of a study aimed at assessing the health of and improving pathways to health services among LGBTQ populations in Nova Scotia, Canada. 相似文献
75.
Feng Xu 《Journal of applied statistics》2017,44(4):642-648
In searching for the optimal inventory control policy, the objective is to minimize the expected total costs related, of which the shortage cost is an important element. Due to the difficulty in calculating the indirect cost of the loss of goodwill resulted from the shortage, practitioners and researchers often simply assume a fixed penalty cost on the inventory shortage or switch to the alternative method by assigning a specific customer service level. The development of an appropriate tool for measuring the shortage cost can help a business control the total costs and improve the productivity more effectively. This paper proposes probabilistic measurements of the shortage cost, based on mathematical relationship between the cost and the shortage amount. The derived closed-form estimates of the expected shortage cost value can then be applied to support the determination of the optimal inventory control policy. 相似文献
76.
ABSTRACTThe purpose of this paper is to prove, under mild conditions, the asymptotic normality of the rank estimator of the slope parameter of a simple linear regression model with stationary associated errors. This result follows from a uniform linearity property for linear rank statistics that we establish under general conditions on the dependence of the errors. We prove also a tightness criterion for weighted empirical process constructed from associated triangular arrays. This criterion is needed for the proofs which are based on that of Koul [Behavior of robust estimators in the regression model with dependent errors. Ann Stat. 1977;5(4):681–699] and of Louhichi [Louhichi S. Weak convergence for empirical processes of associated sequences. Ann Inst Henri Poincaré Probabilités Statist. 2000;36(5):547–567]. 相似文献
77.
The forecasting of sales in a company is one of the crucial challenges that must be faced. Nowadays, there is a large spectrum of methods that enable making reliable forecasts. However, sometimes the nature of time series excludes many well-known and widely used forecasting methods (e.g., econometric models). Therefore, the authors decided to forecast on the basis of a seasonally adjusted median of selected probability distributions. The obtained forecasts were verified by means of distributions of the Theil U2 coefficient and unbiasedness coefficient. 相似文献
78.
Liang Yan 《统计学通讯:理论与方法》2017,46(19):9636-9650
For the slope parameter of the measurement error model with the reliability ratio known, this article constructs a fiducial generalized confidence interval (FGCI) which is proved to have correct asymptotic coverage. Simulation results demonstrate that the FGCI often outperforms the existing intervals in terms of empirical coverage probability, average interval length, and false parameter coverage rate. Two examples are also provided to illustrate our approach. 相似文献
79.
宋睿媛 《山西大同大学学报(社会科学版)》2010,24(5):66-68
2006年,我国财政部颁布了新会计准则体系,把公允价值计量属性引入会计的准则体系。分析公允价值计量属性的优势,以及我国引入公允价值计量属性的有利条件,并就如何实施好公允价值提出建议。 相似文献
80.
提出了测试电介质材料复介电常数的新方法,获得了利用两个散射参数同时求解材料复介电常数的表达式,解决了自由空间法测量电介质材料的相位模糊性问题,建立了测试系统,讨论了该系统的校准方法。通过在X波段对电介质材料复介电常数的测量,证明该测试方法的正确性。 相似文献