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作者：CHANG, MN
摘要：A survival function S is said to be in the New Better than Used of age t0 (NBU-t0) class if S(x + t0) less-than-or-equal-to S(t0)S(x) for all x greater-than-or-equal-to 0. Reneau and Samaniego proposed an estimator S(n) for S when S is known as a member of the NBU-t0 class. Many properties of S(n) were studied by Reneau and Samaniego. The problems of the weak convergence of W(n) = square-root n (S(n) - S), however, was not solved. In this article, we show that the weak convergence of W(n) does...
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作者：HALL, P; WEHRLY, TE
作者单位：Commonwealth Scientific & Industrial Research Organisation (CSIRO); Texas A&M University System; Texas A&M University College Station
摘要：We introduce a simple geometric method for removing edge effects from kernel-type nonparametric regression estimators. It involves reflecting the data set in two estimated points, thereby generating a new data set with three times the range of the original data. The usual kernel-type estimator may be applied to the new, enlarged data set, without any danger of edge effects. This technique is applicable generally to both regularly spaced and randomly spaced designs and admits a natural analog o...
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作者：OSULLIVAN, F
作者单位：University of Washington; University of Washington Seattle
摘要：An approach to multidimensional smoothing is introduced that is based on a penalized likelihood with a modified discretized Laplacian penalty term. The choice of penalty simplifies computational difficulties associated with standard multidimensional Laplacian smoothing methods yet without compromising mean squared error characteristics, at least on the interior of the region of interest. For linear smoothing in hyper-rectangular domains, which has wide application in image reconstruction and r...
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作者：CLOGG, CC; RUBIN, DB; SCHENKER, N; SCHULTZ, B; WEIDMAN, L
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Harvard University; University of California System; University of California Los Angeles; United States Environmental Protection Agency
摘要：We describe methods used to create a new Census data base that can be used to study comparability of industry and occupation classification systems. This project represents the most extensive application of multiple imputation to date, and the modeling effort was considerable as well-hundreds of logistic regressions were estimated. One goal of this article is to summarize the strategies used in the project so that researchers can better understand how the new data bases were created. Another g...
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作者：IZENMAN, AJ
摘要：Advances in computation and the fast and cheap computational facilities now available to statisticians have had a significant impact upon statistical research, and especially the development of nonparametric data analysis procedures. In particular, theoretical and applied research on nonparametric density estimation has had a noticeable influence on related topics, such as nonparametric regression, nonparametric discrimination, and nonparametric pattern recognition. This article reviews recent...
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作者：HULTING, FL; HARVILLE, DA
作者单位：Iowa State University
摘要：The estimation of a treatment contrast from experimental data and the estimation of a small-area mean are special cases of the prediction of the realization of a linear combination of fixed and random effects in a possibly unbalanced two-part mixed linear model. In this article a Bayesian approach to point and interval prediction is presented and its computational requirements are examined. Differences between the Bayesian approach and the traditional (classical) approach are discussed in gene...
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作者：SAMUELS, ML; CASELLA, G; MCCABE, GP
摘要：Can blocks be tested in a randomized blocks design? It is well known that two different formulations of the linear mixed model yield conflicting answers to this question. This article examines the model formulations from the point of view of statistical relevance. Viewing blocking as a device to increase efficiency leads to a hypothesis concerning blocks that is distinct from the hypothesis of no block main effect. Relevant tests and interval estimates are reviewed. The merits of the two model...
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作者：SAMUELS, ML; CASELLA, G; MCCABE, GP
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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：CURRIN, C; MITCHELL, T; MORRIS, M; YLVISAKER, D
作者单位：United States Department of Energy (DOE); Oak Ridge National Laboratory; University of California System; University of California Los Angeles; Bryn Mawr College
摘要：This article is concerned with prediction of a function y(t) over a (multidimensional) domain T, given the function values at a set of sites {t(1), t(2),...,t(n)} in T, and with the design, that is, with the selection of those sites. The motivating application is the design and analysis of computer experiments, where t determines the input to a computer model of a physical or behavioral system, and y(t) is a response that is part of the output or is calculated from it. Following a Bayesian for...
