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作者：Bonas, Matthew; Richter, David H.; Castruccio, Stefano
作者单位：University of Notre Dame; University of Notre Dame
摘要：When a fluid flows over a solid surface, it creates a thin boundary layer where the flow velocity is influenced by the surface through viscosity, and can transition from laminar to turbulent at sufficiently high speeds. Understanding and forecasting the fluid dynamics under these conditions is one of the most challenging scientific problems in fluid dynamics. It is therefore of high interest to formulate models able to capture the nonlinear spatio-temporal velocity structure as well as produce...
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作者：Karmakar, Bikram; Mukherjee, Gourab; Kar, Wreetabrata
作者单位：State University System of Florida; University of Florida; University of Southern California; State University of New York (SUNY) System; University at Buffalo, SUNY
摘要：Amid increasing awareness regarding opioid addiction, medical marijuana has emerged as a substitute to opioids for pain management. Concurrently, opioid manufacturers are putting significant research into making opioids safer yet effective. Interactions between these manufacturers and physicians are critical to advance existing pain management protocols. Direct payments from opioid manufacturers to physicians are established practices that often moderates such interactions. We study the effect...
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作者：del Barrio, Eustasio; Sanz, Alberto Gonzalez; Hallin, Marc
作者单位：Universidad de Valladolid; Columbia University; Universite Libre de Bruxelles; Universite Libre de Bruxelles; Czech Academy of Sciences; Institute of Information Theory & Automation of the Czech Academy of Sciences
摘要：Building on recent measure-transportation-based concepts of multivariate quantiles, we are considering the problem of nonparametric multiple-output quantile regression. Our approach defines nested conditional center-outward quantile regression contours and regions with given conditional probability content, the graphs of which constitute nested center-outward quantile regression tubes with given unconditional probability content; these (conditional and unconditional) probability contents do no...
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作者：Rebaudo, Giovanni; Muller, Peter
作者单位：University of Turin; University of Texas System; University of Texas Austin
摘要：Bayesian nonparametric mixtures and random partition models are powerful tools for probabilistic clustering. However, standard independent mixture models can be restrictive in some applications such as inference on cell lineage due to the biological relations of the clusters. The increasing availability of large genomic data requires new statistical tools to perform model-based clustering and infer the relationship between homogeneous subgroups of units. Motivated by single-cell RNA data we de...
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作者：Liu, Xing
作者单位：Connecticut State University System; Eastern Connecticut State University
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作者：Sun, Yifei; Chiou, Sy Han; Huang, Chiung-Yu
作者单位：Columbia University; Southern Methodist University; University of California System; University of California San Francisco
摘要：Accurate prediction of recurrent clinical events is crucial for effective management of chronic conditions such as cancer and cardiovascular disease. In recent years, longitudinal health informatics databases, which routinely collect data on repeated clinical events, have been increasingly used to construct risk prediction models. We introduce a novel nonparametric framework to predict recurrent events on a gap time scale using survival tree ensembles. Our framework incorporates two predictive...
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作者：Chang, Jinyuan; Jiang, Qing; Mcelroy, Tucker; Shao, Xiaofeng
作者单位：Southwestern University of Finance & Economics - China; Southwestern University of Finance & Economics - China; Chinese Academy of Sciences; Academy of Mathematics & System Sciences, CAS; Beijing Normal University; Washington University (WUSTL); Washington University (WUSTL)
摘要：The spectral density matrix is a fundamental object of interest in time series analysis, and it encodes both contemporary and dynamic linear relationships between component processes of the multivariate system. In this article we develop novel inference procedures for the spectral density matrix in the high-dimensional setting. Specifically, we introduce a new global testing procedure to test the nullity of the cross-spectral density for a given set of frequencies and across pairs of component...
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作者：Huang, Jiaqi; Zhao, Wenbiao; Zhu, Lixing
作者单位：Beijing Normal University; China University of Mining & Technology; Beijing Normal University; Beijing Normal University Zhuhai
摘要：This article proposes an adaptive-to-model test to check the null hypothesis with no more than one coordinate of the response vector relating to the predictor vector in parametric multi-response regressions. To this end, we decompose the null hypothesis into several mutually exclusive sub-null hypotheses and suggest a model identification to construct an adaptive-to-sub-null hypothesis test tackling their mutual exclusiveness, and an adaptive-to-regression test handling the regression function...
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作者：Ohnishi, Yuki; Karmakar, Bikram; Kar, Wreetabrata
作者单位：Yale University; State University System of Florida; University of Florida; State University of New York (SUNY) System; University at Buffalo, SUNY
摘要：Organizations are increasingly relying on digital communications, such as targeted e-mails and mobile notifications, to engage with their audiences. Despite the evident advantages like cost-effectiveness and customization, assessing the effectiveness of such communications from observational data poses various statistical challenges. An immediate challenge is to adjust for targeting rules used in these communications. When digital communications involve a sequence of e-mails or notifications, ...
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作者：Lei, Lihua
作者单位：Stanford University; Stanford University
