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作者：Crainiceanu, Ciprian M.; Caffo, Brian S.; Di, Chong-Zhi; Punjabi, Naresh M.
作者单位：Johns Hopkins University; Johns Hopkins University; Johns Hopkins Bloomberg School of Public Health
摘要：We introduce methods for signal and associated variability estimation based on hierarchical nonparametric smoothing with application to the Sleep Heart Health Study (SHHS). SHHS is the largest electroencephalographic (EEG) collection of sleep-related data, which contains, at each visit, two quasi-continuous EEG signals for each subject. The signal features extracted from EEG data are then used in second level analyses to investigate the relation between health, behavioral, or biometric outcome...
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作者：Chiou, Jeng-Min; Mueller, Hans-Georg
作者单位：University of California System; University of California Davis
摘要：As world populations age, the analysis of demographic mortality data and demographic predictions of future mortality have met with increasing interest. The study of mortality patterns and the forecasting of future mortality with its associated impacts on social welfare. health care, and societal planning has become a more pressing issue. An ideal set of data to study Patterns of change in long-term mortality is the well-known historical Swedish cohort mortality data. because of its high qualit...
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作者：Neddermeyer, Jan C.
作者单位：Ruprecht Karls University Heidelberg
摘要：The variance reduction established by importance sampling strongly depends on the choice of the importance sampling distribution. A good choice is often hard to achieve especially for high-dimensional integration problems. Nonparametric estimation of the optimal importance sampling distribution (known as nonparametric importance sampling) is a reasonable alternative to parametric approaches. In this article, nonparametric variants of both the self-normalized and the unnormalized importance sam...
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作者：Ghosh, Pulak; Basu, Sanjib; Tiwari, Ram C.
作者单位：University System of Georgia; Georgia State University; Northern Illinois University; US Food & Drug Administration (FDA)
摘要：Cancer is the second leading cause of death in the United States. Cancer incidence and mortality rates measured the progress against cancer: these rates are obtained from the surveillance, Epidemiology, and End Results (SEER) Program of the National Cancer Institute (NCI). Lung cancer has the highest mortality rate among all cancers, whereas prostate cancer has the highest number of new cases among males. In this article, we analyze the incidence rates of these two cancers, as well as colon an...
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作者：Paciorek, Christopher J.; McLachlan, Jason S.
作者单位：Harvard University; Harvard T.H. Chan School of Public Health; University of Notre Dame
摘要：Ecologists use the relative abundance of fossil pollen tit sediments to estimate how tree species abundances change over space and time. To predict historical forest composition and quantify the available information, we build a Bayesian hierarchical model of forest composition in central New England, USA. based oil pollen in a network of ponds. The critical relationships between abundances of taxa in the pollen record and abundances as actual vegetation are estimated for the modern and coloni...
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作者：Witten, Daniela M.; Hastie, Trevor; Tibshirani, Robert
作者单位：Stanford University; Stanford University
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作者：Bartolucci, Francesco; Farcomeni, Alessio
作者单位：University of Perugia; Sapienza University Rome
摘要：For the analysis of multivariate categorical longitudinal data, we propose an extension of the dynamic logit model. The resulting model is based oil a marginal parameterization of the conditional distribution of each vector of response variables given the covariates, the lagged response variables. and a set of subject-specific parameters for the unobserved heterogeneity. The latter ones are assumed to follow a first-order Markov chain. For the maximum likelihood estimation of the model paramet...
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作者：Johnstone, Iain M.; Lu, Arthur Yu
作者单位：Stanford University
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作者：Rosenbaum, Paul R.; Silber, Jeffrey H.
作者单位：University of Pennsylvania; University of Pennsylvania
摘要：In randomized experiments, it is sometimes important to demonstrate that two treatments do not differ greatly in their effects, or to demonstrate that the treatments have very different effects on one outcome similar effects on another outcome. These demonstrations may take the form of rejecting a null hypothesis of inequivalence in an equivalence test, or rejecting a null hypothesis of equal and inequivalent effects on two outcomes. The procedures often express a complex hypothesis in terms o...
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作者：Lennox, Kristin P.; Dahl, David B.; Vannucci, Marina; Tsai, Jerry W.
作者单位：Texas A&M University System; Texas A&M University College Station; Rice University; University of the Pacific
摘要：Interest in predicting protein backbone conformational angles has prompted the development of modeling and inference procedures for bivariate angular distributions. We present it Bayesian approach to density estimation for bivariate angular data that uses a Dirichlet process mixture model and a bivariate von Mises distribution. We derive the necessary full conditional distributions 10 fit the model, as well as the details for sampling from the posterior predictive distribution, We show how our...
