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作者：Denby, L; Landwehr, JM; Mallows, CL
作者单位：Avaya
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作者：Liu, XL; Müller, HG
作者单位：University of California System; University of California Los Angeles; University of California Los Angeles Medical Center; David Geffen School of Medicine at UCLA; University of California System; University of California Los Angeles; University of California Los Angeles Medical Center; David Geffen School of Medicine at UCLA; University of California System; University of California Davis
摘要：Data that can be best described as a sample of curves are now fairly common in science and engineering. When the dynamics of development, growth, or response over time are at issue, subjects or experimental units may experience events at different temporal paces. For functional data where trajectories may be individually time-transformed, it is usually inadequate to use commonly used sample statistics, such as the cross-sectional mean or median or the cross-sectional sample variance. If one ob...
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作者：Pacifico, MP; Genovese, C; Verdinelli, I; Wasserman, L
作者单位：Sapienza University Rome; Carnegie Mellon University
摘要：This article extends false discovery rates to random fields. for which there are uncountably many hypothesis tests. We develop a method for finding regions in the field's domain where there is a significant signal while controlling either the proportion of area or the proportion of clusters in which false rejections occur. The method produces confidence envelopes for the proportion of false discoveries as a function of the rejection threshold. From the confidence envelopes, we derive threshold...
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作者：Liang, H; Wang, SJ; Robins, JM; Carroll, RJ
作者单位：Texas A&M University System; Texas A&M University College Station; Harvard University; Harvard T.H. Chan School of Public Health
摘要：The partially linear model Y = X(T)beta + v(Z) + epsilon has been studied extensively when data are completely observed. In this article, we consider the case where the covariate X is sometimes missing, with missingness probability pi depending on (Y, Z). New methods are developed for estimating and v(.). Our methods are shown to outperform asymptotically methods based only on the complete data. Asymptotic efficiency is discussed. and the semiparametric efficient score function is derived. Jus...
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作者：Liu, W; Jamshidian, M; Zhang, Y
作者单位：University of Southampton; University of Southampton; California State University System; California State University Fullerton; State University System of Florida; University of Central Florida
摘要：Research on multiple comparison during the past 50 years or so has focused mainly on the comparison of several population means. Several years ago. Spurrier considered the multiple comparison of several simple linear regression lines. He constructed simultaneous confidence bands for all of the contrasts of the simple linear regression lines over the entire range (-infinity, infinity) when the models have the same design matrices. This article extends Spurrier's work in several directions. Firs...
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作者：Burman, P
作者单位：University of California System; University of California Davis
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作者：Efron, B
作者单位：Stanford University
摘要：Having constructed a data-based estimation rule, perhaps a logistic regression or a classification tree, the statistician would like to know its performance as a predictor of future cases. There are two main theories concerning prediction error: (I) penalty methods such as C-p, Akaike's information criterion, and Stein's unbiased risk estimate that depend on the covariance between data points and their corresponding predictions; and (2) cross-validation and related nonparametric bootstrap tech...
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作者：Geweke, J
作者单位：University of Iowa; University of Iowa
摘要：Analytical or coding errors in posterior simulators can produce reasonable but incorrect approxii nations of posterior moments. This article develops simple tests of posterior simulators that detect both kinds of errors, and uses them to detect and correct errors in two previously published articles. The tests exploit the fact that a Bayesian model specifies the joint distribution of observables (data) and unobservables (parameters). There are two joint distribution simulators. The roarginal-c...
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作者：Ferreira, E; Stute, W
作者单位：University of Basque Country; Justus Liebig University Giessen
摘要：In this article we study tests for equality of two regression curves when the inputs are driven by a time series. The basic process underlying the test statistics is the empirical process of the time series marked by the difference in the pertaining dependent variables. The main results hold under strict stationarity of the input variables, but no mixing condition or special modeling of the time series will be necessary. A simulation study is reported on, which illustrates the quality of the d...
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作者：Roy, A; Falk, B; Fuller, WA
作者单位：University System of Maryland; University of Maryland Baltimore County; Iowa State University
摘要：A popular model for assessing dependence on time is the time series model composed of a linear trend plus a zero mean autoregressive (AR) process. Although considerable effort has been devoted developing tests for linear trend in the presence of serial correlation, the testing procedures used in practice are less than satisfactory for portions of the parameter space for the AR coefficient. This is because the variance of the feasible generalized least squares (FGLS) estimator of the trend coef...
