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作者：Kneip, A; Utikal, KJ
作者单位：Johannes Gutenberg University of Mainz
摘要：We consider t = 1,..., T samples of lid observations {X-1t,...,X-ntt} from unknown population densities {f(t)}. To characterize differences and similarities of {f(t)}, we assume their expansions into the first L principal components. From the given observations {X-it}, we study inference on the components and on their required number L. A detailed asymptotic theory is presented. Our method is applied in the analysis of yearly cross-sectional samples of British households. Interpretation of the...
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作者：Berger, JO; Guglielmi, A
作者单位：Duke University; Consiglio Nazionale delle Ricerche (CNR)
摘要：Testing the fit of data to a parametric model can be done by embedding the parametric model in a nonparametric alternative and computing the Bayes factor of the parametric model to the nonparametric alternative. Doing so by specifying the nonparametric alternative via a Polya tree process is particularly attractive, from both theoretical and methodological perspectives. Among the benefits is a degree of computational simplicity that even allows for robustness analyses to be implemented Default...
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作者：Kauermann, G; Carroll, RJ
作者单位：University of Glasgow; University of Glasgow; Texas A&M University System; Texas A&M University College Station
摘要：The sandwich estimator, also known as robust covariance matrix estimator, heteroscedasticity-consistent covariance matrix estimate, or empirical covariance matrix estimator, has achieved increasing use in the econometric literature as well as with the growing popularity of generalized estimating equations. Its virtue is that it provides consistent estimates of the covariance matrix for parameter estimates even when the fitted parametric model fails to hold or is not even specified. Surprisingl...
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作者：Higdon, D; Yamamoto, S
作者单位：Duke University
摘要：We apply Bayesian image analysis techniques to a problem in a newly developed scanned probe technology that uses commercial magnetoresistive (MR) record and playback heads as probes to sense magnetic fields. This technology can be used for magnetic imaging and for evaluating playback and record processes in magnetic recording. In MR microscopy, an MR head is raster scanned while in physical contact with a magnetic sample (e.g., hard disk media, tape, or fine magnetic particles). By plotting th...
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作者：Lai, TL; Wong, SPS
作者单位：Stanford University; Hong Kong University of Science & Technology
摘要：we consider a variant of the conventional neural network model, called the stochastic neural network, that can be used to approximate complex nonlinear stochastic systems. We show how the expectation-maximization algorithm can be used to develop efficient estimation schemes that have much lower computational complexity than those for conventional neural networks. This enables us to carry out model selection procedures, such as the Bayesian information criterion, to choose the number of hidden ...
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作者：DiMatteo, I; Kadane, JB
作者单位：Carnegie Mellon University
摘要：This article examines the evidence of vote tampering in a District Justice election in Beaver County, Pennsylvania. An informal exploratory data analysis and a legal history are followed by a formal Bayesian model of the data from the vote count on election night and the recount completed 2 months later. The evidence suggests that persons unknown could have gained access to the boxes containing the paper ballots. and surprising patterns of changes in the counts support the inference that certa...
