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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：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：Lee, Ann B.; Wasserman, Larry
作者单位：Carnegie Mellon University
摘要：Spectral kernel methods are techniques or mapping data into a coordinate system that efficiently reveals the geometric structure-in particular, the connectivity-of the data. These methods depend on tuning parameters. We analyze the dependence of the method on these tuning parameters. We focus on one particular technique-diffusion maps-but our analysis can be used for other spectral methods as well. We identify the key population quantities, we define an appropriate risk function for analyzing ...
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作者：Wahl, Eugene; Schoelzel, Christian; Williams, John; Tigrek, Seyitriza
作者单位：National Oceanic Atmospheric Admin (NOAA) - USA; University of Bonn; University of Wisconsin System; University of Wisconsin Madison; University of Colorado System; University of Colorado Boulder
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作者：Bilder, Christopher R.; Tebbs, Joshua M.; Chen, Peng
作者单位：University of Nebraska System; University of Nebraska Lincoln; University of South Carolina System; University of South Carolina Columbia
摘要：In situations where individuals are screened for an infectious disease or other binary characteristic and where resources for testing are limited, group testing can offer substantial benefits. Group testing, where subjects are tested in groups (pools) initially, has been successfully applied to problems in blood bank screening, public health, drug discovery, genetics, and many other areas. In these applications, often the goal is to identify each individual as positive or negative using initia...
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作者：Chen, Kani; Guo, Shaojun; Lin, Yuanyuan; Ying, Zhiliang
作者单位：Hong Kong University of Science & Technology; Columbia University; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS
摘要：Multiplicative regression model or accelerated failure time model, which becomes linear regression model after logarithmic transformation, is useful in analyzing data with positive responses, such as stock prices or life times, that are particularly common in economic/financial or biomedical studies. Least squares or least absolute deviation are among the most widely used criterions in statistical estimation for linear regression model. However, in many practical applications, especially in tr...
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作者：Huang, Li-Shan; Davidson, Philip W.
作者单位：University of Rochester
摘要：Fish consumption during pregnancy exposes the fetus to both the neurotoxicant methylmercury and nutrients known to be beneficial for brain development. When nutrient status is not measured, maternal methylmercury levels may be a partial biomarker for both toxic and nutrient exposures. It is therefore necessary to employ a flexible model-such as the partial linear model-that will allow for possible nonlinear trends of methylmercury. To enhance interpretations of fitting a partial linear model, ...
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作者：Smith, Richard L.
作者单位：University of North Carolina; University of North Carolina Chapel Hill
