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作者：Nandram, Balgobin; Choi, Jai Won
作者单位：Worcester Polytechnic Institute; University System of Georgia; Augusta University
摘要：Here we analyze body mass index (BMI) data for addict) and adolescents from the Third National Health and Nutrition Examination Survey (NHANES III) Because of the lack of BMI vallies for a considerable number of the children and adolescents, and the differential probabilities of selection of these individuals, serious nonresponse and selection bias in inference can be present To analyze the NHANES III BMI data, a nonignorable nonresponse model has been proposed to estimate the finite populatio...
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作者：Froelich, Markus; Lechner, Michael
作者单位：University of Mannheim; University of St Gallen; IZA Institute Labor Economics; Leibniz Association; Zentrum fur Europaische Wirtschaftsforschung (ZEW); Centre for Economic Policy Research - UK
摘要：We estimate the effects of active labor market policies (ALMPs) on subsequent employment and earnings by nonparametric instrumental variable estimators. Very informative administrative Swiss data with detailed regional information are combined with exogenous regional variation in program participation probabilities to generate an instrument within well-defined local labor markets. We find that implementation of an ALMP increased individual employment probabilities by about 15% for unemployed t...
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作者：Lin, Ming; Chen, Rong; Mykland, Per
作者单位：Xiamen University; Rutgers University System; Rutgers University New Brunswick; Peking University; University of Chicago
摘要：Diffusion processes are widely used in engineering, finance, physics, and other fields. Usually continuous-time diffusion processes can be observed only at discrete time points. For many applications, it is often useful to impute continuous-time bridge samples that follow the diffusion dynamics and connect each pair of the consecutive observations. The sequential Monte Carlo (SMC) method is a useful tool for generating the intermediate paths of the bridge. The paths often are generated forward...
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作者：Padoan, S. A.; Ribatet, M.; Sisson, S. A.
作者单位：Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; University of New South Wales Sydney
摘要：The last decade has seen max-stable processes emerge as a common tool for the statistical modeling of spatial extremes However, their application is complicated due to the unavailability of the multivariate density function and so likehhood-based methods remain far from providing a complete and flexible framework kit inference In this article we develop inferentially practical likehhood-based methods for fitting max-stable processes derived from a composite-likehhood approach The procedure is ...
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作者：Banerjee, Sudipto; Finley, Andrew O.; Waldmann, Patrik; Ericsson, Tore
作者单位：University of Minnesota System; University of Minnesota Twin Cities; Michigan State University; Swedish University of Agricultural Sciences; Skogforsk; Michigan State University
摘要：This article expands upon recent interest in Bayesian hierarchical models in quantitative genetics by developing spatial process models for inference on additive and dominance genetic variance within the context of large spatially referenced trial datasets of multiple traits of interest. Direct application of such multivariate models to large spatial datasets is often computationally infeasible because of cubic order matrix algorithms involved in estimation. The situation is even worse in Mark...
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作者：Panaretos, Victor M.; Kraus, David; Maddocks, John H.
作者单位：Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne
摘要：Given two samples of continuous zero-mean iid Gaussian processes on [0, 1], we consider the problem of testing whether they share the same covariance structure. Our study is motivated by the problem of determining whether the mechanical properties of short strands of DNA are significantly affected by their base-pair sequence; though expected to be true, had so far not been observed in three-dimensional electron microscopy data, The testing problem is seen to involve aspects of ill-posed invers...
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作者：Baladandayuthapani, Veerabhadran; Ji, Yuan; Talluri, Rajesh; Nieto-Barajas, Luis E.; Morris, Jeffrey S.
作者单位：University of Texas System; UTMD Anderson Cancer Center; University of Texas System; UTMD Anderson Cancer Center; Texas A&M University System; Texas A&M University College Station; Instituto Tecnologico Autonomo de Mexico
摘要：Array-based comparative genomic hybridization (aCGH) is a high-resolution, high-throughput technique for studying the genetic basis of cancer. The resulting data consist of log fluorescence ratios as a function of the genomic DNA location and provide a cytogenetic representation of the relative DNA copy number variation. Analysis of such data typically involves estimating the underlying copy number state at each location and segmenting regions of DNA with similar copy number states. Most curre...
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作者：Dhavala, Soma S.; Datta, Sujay; Mallick, Bani K.; Carroll, Raymond J.; Khare, Sangeeta; Lawhon, Sara D.; Adams, L. Garry
作者单位：Texas A&M University System; Texas A&M University College Station; Fred Hutchinson Cancer Center; Texas A&M University System; Texas A&M University College Station
摘要：Massively Parallel Signature Sequencing (MPSS) is a high-throughput, counting-based technology available for gene expression profiling. It produces output that is similar to Serial Analysis of Gene Expression and is ideal for building complex relational databases for gene expression. Our goal is to compare the in vivo global gene expression profiles of tissues infected with different strains of Salmonella obtained using the MPSS technology. In this article, we develop an exact ANOVA type model...
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作者：Kott, Phillip S.; Chang, Ted
作者单位：Research Triangle Institute; University of Virginia
摘要：When calibration weighting is be used to adjust for unit nonresponse in a sample survey, the response/nonresponse mechanism is often assumed to be a function of a set of covariates, which we call model variables. These model variables usually also serve as the benchmark variables in the calibration equation. In principle, however, the model variables do not have to coincide with the benchmark variables. Since the model-variable values need only be known for the respondents, this allows the tre...
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作者：Li, Fan; Zaslavsky, Alan M.
作者单位：Duke University; Harvard University; Harvard Medical School
摘要：We use data collected in the National Comorbidity Survey-Adolescent (NCS-A) to develop a methodology to estimate the small-area prevalence of serious emotional distress (SED) in schools in the United States, exploiting the clustering of the main NCS-A sample by school. The NCS-A instrument includes both a short screening scale, the K6, and extensive diagnostic assessments of the individual disorders and associated impairment that determine the diagnosis of SED. We fitted a Bayesian bivariate m...
