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作者：Racz, Michael J.; Sedransk, J.
作者单位：Albany College of Pharmacy & Health Sciences; State University of New York (SUNY) System; University at Albany, SUNY; University System of Ohio; Case Western Reserve University
摘要：Provider profiling is the evaluation of the performance of hospitals, doctors, and other medical practitioners to enhance the quality of medical care We propose a new method and compare conventional and Bayesian methodologies that are used or proposed for use for such report cards Conventional statistical approaches to these provider assessments use likelihood-based frequentist methodologies and the new Bayesian method is patterned after these For each of three models, we compare the frequenti...
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作者：Haaland, Ben; Min, Wanli; Qian, Peter Z. G.; Amemiya, Yasuo
作者单位：National University of Singapore; Shanghai University of Finance & Economics; University of Wisconsin System; University of Wisconsin Madison; International Business Machines (IBM); IBM USA
摘要：Temperature control for a large data center is both important and expensive. On the one hand, many of the components produce a great deal of heat, and on the other hand, many of the components require temperatures below a fairly low threshold for reliable operation. A statistical framework is proposed within which the behavior of a large cooling system can be modeled and forecast under both steady state and perturbations. This framework is based upon an extension of multivariate Gaussian autor...
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作者：Hong, Hyokyoung Grace; He, Xuming
作者单位：City University of New York (CUNY) System; Baruch College (CUNY); City University of New York (CUNY) System; Baruch College (CUNY); University of Illinois System; University of Illinois Urbana-Champaign
摘要：The functional mobility of the elderly is a very important factor in aging research, and prognostic information is valuable in making clinical and health care policy decisions. We develop a predictive model for the functional status of the elderly based on data from the Second Longitudinal Study of Aging (LSOA II). The functional status is an ordinal response variable. The ordered probit model has been moderately successful in analyzing such data; however, its reliance on the normal distributi...
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作者：Sentuerk, Damla; Mueller, Hans-Georg
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of California System; University of California Davis
摘要：The proposed functional varying coefficient model provides a versatile and flexible analysis tool for relating longitudinal responses to longitudinal predictors. Specifically, this approach provides a novel representation of varying coefficient functions through suitable auto and cross-covariances of the underlying stochastic processes, which is particularly advantageous for sparse and irregular designs, as often encountered in longitudinal studies. Existing methodology for varying coefficient...
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作者：Fong, Duncan K. H.; DeSarbo, Wayne S.; Park, Joonwook; Scott, Crystal J.
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Southern Methodist University; University of Michigan System; University of Michigan
摘要：Multidimensional scaling (MDS) comprises a family of geometric models for the multidimensional representation of data and a corresponding set of methods for fitting such models to actual data. In this paper, we develop a new Bayesian vector MDS model to analyze ordered successive categories preference/dominance data commonly collected in many social science and business studies. A joint spatial representation of the row and column elements of the input data matrix is provided in a reduced dime...
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作者：La Vecchia, Davide; Trojani, Fabio
作者单位：Universita della Svizzera Italiana
摘要：We develop infinitesimally robust statistical procedures for the general diffusion processes. We first prove the existence and uniqueness of the times-series influence function of conditionally unbiased M-estimators for ergodic and stationary diffusions, under weak conditions on the (martingale) estimating function used. We then characterize the robustness of M-estimators for diffusions and derive a class of conditionally unbiased optimal robust estimators. To compute these estimators, we prop...
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作者：Cao, J.; Ramsay, J. O.
作者单位：Simon Fraser University; McGill University
摘要：A linear mixed-effects model (LME) is a familial example of a multilevel parameter structure involving nuisance and structural parameters. as well as parameters that essentially control the model's complexity Marginalization Over nuisance parameters. such as the restricted maximization likelihood method, has been the usual estimation strategy, but it can Involve onerous and complex algorithms to achieve the integrations involved Parameter cascading Is described as a multicriterion optimization...
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作者：Cattaneo, Matias D.; Crump, Richard K.; Jansson, Michael
作者单位：University of Michigan System; University of Michigan; Federal Reserve System - USA; Federal Reserve Bank - New York; University of California System; University of California Berkeley; CREATES
摘要：This paper presents a novel data-driven bandwidth selector compatible with the small bandwidth asymptotics developed in Cattaneo, Crump, and Jansson (2009) for density-weighted average derivatives. The new bandwidth selector is of the plug-in variety, and is obtained based on a mean squared error expansion of the estimator of interest. An extensive Monte Carlo experiment shows a remarkable improvement in performance when the bandwidth-dependent robust inference procedures proposed by Cattaneo....
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作者：Braun, Michael; McAuliffe, Jon
作者单位：Massachusetts Institute of Technology (MIT); University of California System; University of California Berkeley
摘要：Discrete choice models are commonly used by applied statisticians in numerous fields. such as marketing. economics. finance. and operations research When agents in discrete choice models are assumed to have differing preferences. exact inference is often intractable Markov chain Monte Carlo techniques make approximate inference possible. but the computational cos is prohibitive on the large damsels now becoming untimely available Variational I methods provide a deterministic alternative for ap...
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作者：Zhang, Yiyun; Li, Runze; Tsai, Chin-Ling
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of California System; University of California Davis; Novartis; Novartis USA
摘要：We apply the nonconcave penalized likelihood approach to obtain variable selections as well as shrinkage estimators This approach relies heavily on the choice of regularization parameter, which controls the model complexity In this paper, we propose employing the generalized in criterion. encompassing the commonly used Akaike in criterion (AIC) and Bayesian information criterion (BIC), for selecting the regularization parameter Our proposal makes a connection between the classical variable sel...
