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作者：PEARSON, RW
摘要：Social statistics have played a large role in describing the nature of the problem of an emerging urban underclass in the United States and in placing these issues on the public agenda and before the research community. Extant social statistics, however, are inadequate to the task of understanding the processes and mechanisms that create, maintain, or overcome the conditions and consequences of the urban underclass. Without theoretically informed social statistics of organizations and institut...
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作者：ATKINSON, AC
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作者：CALVIN, JA; DYKSTRA, RL
摘要：The problem of estimating covariance matrices in balanced multivariate variance components models is discussed. As with univariate models, it is possible for the traditional estimators, based on differences of the mean square matrices, to produce estimates that are outside the parameter space. In fact, in many cases it is extremely likely that traditional estimates of the covariance matrices will not be nonnegative definite (nnd). In this article we develop an iterative estimation procedure, s...
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作者：CORDER, LS; MANTON, KG
摘要：The rapid growth of the U.S. elderly (age 65+) and oldest-old (age 85+) populations, combined with their high per capita acute health and long-term care (LTC) service needs, raises concerns about existing health care payment systems. Adapting and designing new types of health insurance and existing health policies require accurate data on the elderly's health and functional characteristics. Strengths and weaknesses of five national health surveys in providing such data are evaluated. Methodolo...
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作者：STOFFER, DS
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作者：SHAFFER, JP
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作者：WAND, MP; MARRON, JS; RUPPERT, D
作者单位：University of North Carolina; University of North Carolina Chapel Hill; Cornell University; Cornell University
摘要：For the density estimation problem the global window width kernel density estimator does not perform well when the underlying density has features that require different amounts of smoothing at different locations. In this article we propose to transform the data with the intention that a global window width is more appropriate for the density of the transformed data. The density estimate of the original data is the ''back-transform'' by change of variables of the global window width estimate ...
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作者：JENSEN, JL
摘要：For a large class of tests related to the multivariate normal distribution a number of approximations to the distribution of the log-likelihood ratio statistic are discussed. Some of the approximations require the use of a small personal computer for their calculation, but this pays off in terms of giving very accurate approximations. Actually, one of the approximations, based on the use of a conjugate distribution, works well for all sample sizes and all significance levels.
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作者：KAO, TC; MCCABE, GP
摘要：For two multivariate normal populations with a common covariance matrix and stratified sampling, we consider two methods of estimation-Fisher's linear discriminant function and logistic regression. Intuition suggests that taking half of the observations from each population is a reasonable design choice. Based on minimizing the expected error regret, asymptotic optimal sample allocations are found. The results indicate that the differences in the expected error regret for optimal versus balanc...
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作者：NAIMAN, DQ
