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作者：Berk, R; Marcus, R
作者单位：VOLCANI INSTITUTE OF AGRICULTURAL RESEARCH
摘要：Exact simultaneous one-sided confidence intervals for contrasts in m normal means are discussed. The set K of Contrast vectors considered is of one of two forms: Either it is a cone whose coordinates are monotone for a partial ordering defined on the coordinate index set (1,...,m) or it is the polar of such a cone. It is shown that the intervals obtained are inverted from test statistics that may be used for testing the null hypothesis that the mean vector mu lies in the dual (or negative pola...
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作者：Givens, GH; Raftery, AE
作者单位：University of Washington; University of Washington Seattle
摘要：We consider adaptive importance sampling techniques that use kernel density estimates at each iteration as importance sampling functions. These can provide more nearly constant importance weights and more precise estimates of quantities of interest than the sampling importance resampling algorithm when the initial importance sampling function is diffuse relative to the target. We propose a new method that adapts to the varying local structure of the target. When the target has unusual structur...
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作者：Seifert, B; Gasser, T
摘要：Fitting local polynomials in nonparametric regression has a number of advantages. The attractive theoretical features are in a partial contradiction to variance properties for random design and to practical experience over a broad range of situations. No upper bound can be given for the conditional variance. The unconditional variance is infinite when using optimal weights with compact support. Properties are better for Gaussian weights. We analyze local polynomials for finite sample size, bot...
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作者：Jung, SH
摘要：This article proposes quasi-likelihood equations for median regression models. The quasi-likelihood can be used for dependent observations such as repeated measurements or time series data. To construct a quasi-likelihood equation, we need to specify the relation between the median and the dispersion and also specify the dependency of the observations. If a monotone transformation of the original observation has a Laplace distribution, then the quasi-likelihood is the exact likelihood. Under m...
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作者：Berger, JO; Pericchi, LR
作者单位：Simon Bolivar University
摘要：In the Bayesian approach to model selection or hypothesis testing with models or hypotheses of differing dimensions, it is typically not possible to utilize standard noninformative (or default) prior distributions. This has led Bayesians to use conventional proper prior distributions or crude approximations to Bayes factors. In this article we introduce a new criterion called the intrinsic Bayes factor, which is fully automatic in the sense of requiring only standard noninformative priors for ...
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作者：Fan, JQ; Hall, P; Martin, MA; Patil, P
作者单位：Australian National University; Australian National University; University of Birmingham
摘要：We develop new local versions of familiar smoothing methods; such as cross-validation and smoothed cross-validation, in the contexts of density estimation and regression. These new methods are locally adaptive in the sense that they capture smooth local fluctuations in the curve by using smoothly varying bandwidths that change as the character of the curve changes. Moreover, the new methods are accurate, easy to apply, and computationally expedient.
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作者：Jones, MC; Marron, JS; Sheather, SJ
作者单位：University of North Carolina; University of North Carolina Chapel Hill; University of New South Wales Sydney
摘要：There has been major progress in recent years in data-based bandwidth selection for kernel density estimation. Some ''second generation'' methods, including plug-in and smoothed bootstrap techniques, have been developed that are far superior to well-known ''first generation'' methods, such as rules of thumb, least squares cross-validation, and biased cross-validation. We recommend a ''solve-the-equation'' plug-in bandwidth selector as being most reliable in terms of overall performance. This a...
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作者：Lawrence, C; Reilly, A
作者单位：State University of New York (SUNY) System; University at Albany, SUNY
摘要：Given that all the cells of an individual have the same genetic information stored in their DNA, how can cells be as different as those of the retina and heart? Nature solves this problem through gene regulation, which often involves the binding of regulatory proteins to regulatory sites. These sites are short subsequences of 10 to 20 DNA base pairs whose pattern may be multinomially modeled. These sites usually occur ''upstream'' of the genes they regulate in a segment of a few hundred DNA ba...
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作者：Kianifard, F; Swallow, WH
作者单位：North Carolina State University
摘要：Recursive residuals have been shown to be useful in a variety of applications in linear models. Unlike the more familiar ordinary least squares residuals or studentized residuals, recursive residuals are independent as well as homoscedastic under the model. Their independence is particularly appealing for use in developing test statistics. They are not uniquely defined; their values depend on the order in which they are calculated, although their properties do not. In some applications one can...
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作者：Jones, MP
作者单位：University of Iowa; University of Iowa
摘要：The statistical literature and folklore contain many methods for handling missing explanatory variable data in multiple linear regression. One such approach is to incorporate into the regression model an indicator variable for whether an explanatory variable is observed. Another approach is to stratify the model based on the range of values for an explanatory variable, with a separate stratum for those individuals in which the explanatory variable is missing. For a least squares regression ana...
