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651.
652.
Bent Jrgensen Sren Lundbye-Christensen Peter Xue-Kun Song Li Sun 《Revue canadienne de statistique》1996,24(3):385-402
We propose a class of state-space models for multivariate longitudinal data where the components of the response vector may have different distributions. The approach is based on the class of Tweedie exponential dispersion models, which accommodates a wide variety of discrete, continuous and mixed data. The latent process is assumed to be a Markov process, and the observations are conditionally independent given the latent process, over time as well as over the components of the response vector. This provides a fully parametric alternative to the quasilikelihood approach of Liang and Zeger. We estimate the regression parameters for time-varying covariates entering either via the observation model or via the latent process, based on an estimating equation derived from the Kalman smoother. We also consider analysis of residuals from both the observation model and the latent process. 相似文献
653.
对物流学学科体系的思考 总被引:5,自引:0,他引:5
物流学学科发展、物流教育和物流实践的发展 ,都需要明确的物流学学科体系作为指导。物流学是社会科学和自然科学之间的交叉学科 ,也是管理科学和工程技术科学之间的交叉学科。物流学学科可以进一步划分为物流管理、物流工程、物流经济三个子学科 ,每个子学科都有其特定的研究对象、研究目标、研究方法等。 相似文献
654.
刘开会 《兰州大学学报(社会科学版)》1997,(2)
本文概述并分析了海德格尔的历史观,在此基础上指出,伽达默尔的观点是从海德格尔的生存论本体论历史观出发的,但是,他没有完全因循海德格尔的观点,至少在三个方面,他发展了海德格尔的思想。首先,他把重心从此在筹划的未来性转到历史性上;其次,他把此在生存论筹划的单向作用变成了历史传统和解释者之间的相互作用;第三,他提出了“效果历史”原则,并应用到历史观研究中去。总之,他的发展反映了现代精神科学和现代历史哲学的发展趋势 相似文献
655.
Quite a number of test statistics and estimators for detection of a change in the mean of a series of independent observations were proposed and studied. The purpose of this paper is to examine the behaviour of these statistics if the observations are dependent, particularly, if they form a linear process. 相似文献
656.
李开灿 《湖北师范学院学报(哲学社会科学版)》1992,(3)
文章对独立、同分布的线性秩统计量渐近正态分布的Hajck定理进行了推广,得到了k维秩线性统计量渐近正态性的结果。 相似文献
657.
658.
The Construction of Optimal Imcomplete Block Designs When Observations Within a Block are Correlated
An algorithmic method is described for the construction of optimal incomplete block designs when a known correlation structure is assumed for observations from plots in the same block. The method is applicable to a wide class of designs and correlation structures. Some examples are given to illustrate the procedure. 相似文献
659.
Robert M Hauser 《Social science research》1984,13(2):159-187
It is a truism of research on social stratification that the effects of socioeconomic or family background on educational attainment and adult success lead to biases in the simple regressions of occupational status (or other putative outcomes of schooling) on educational attainment. The present analysis compares findings of family bias in the effects of schooling on occupational status across samples of siblings drawn from the Wisconsin Longitudinal Study and from Olneck's sample of brothers from Kalamazoo, Michigan. The comparative analysis shows that family bias in the effect of schooling on occupational status may be much less than is commonly believed and that very large samples may be needed to measure it reliably. Moreover, the analysis suggests that estimates of family bias are very sensitive to the specification of response variability in schooling. The analysis also illustrates some useful methods for cross-population comparison of structural equation models. 相似文献
660.
When evaluating the effectiveness of an educational program, a sampling strategy known as “multiple matrix sampling” is particularly effective and efficient when the goal of the evaluation is estimating group (as opposed to individual) performance. Although this technique involves sampling both program participants and items and, subsequently, different participants being assessed over different sets of items, the results may be used to estimate those which would have been obtained had all participants been administered all items. The technique is here described in some detail, with advantages and disadvantages discussed, and examples of its application are given. 相似文献