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作者：Kim, Bomin; Niu, Xiaoyue; Hunter, David; Cao, Xun
作者单位：Freddie Mac; 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
摘要：Motivated by a study of United Nations voting behaviors, we introduce a regression model for a series of networks that are correlated over time. Our model is a dynamic extension of the additive and multiplicative effects network model (AMEN) of Hoff (Statist. Sci. 36 (2021) 34-50). In addition to incorporating a temporal structure, the model accommodates two types of missing data and thus allows the size of the network to vary over time. We demonstrate via simulations the necessity of various ...
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作者：Wang, By yue; Shojaie, Ali; Randolph, Timothy; Knight, Parker; Ma, Jing
作者单位：University of Colorado System; University of Colorado Anschutz Medical Campus; University of Washington; University of Washington Seattle; Fred Hutchinson Cancer Center; Harvard University; Fred Hutchinson Cancer Center
摘要：Motivated by emerging applications in ecology, microbiology, and neu-roscience, this paper studies high-dimensional regression with two-way struc-tured data. To estimate the high-dimensional coefficient vector, we pro-pose the generalized matrix decomposition regression (GMDR) to efficiently leverage auxiliary information on row and column structures. GMDR extends the principal component regression (PCR) to two-way structured data, but un-like PCR, GMDR selects the components that are most pre...
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作者：Schoenberg, Frederic
作者单位：University of California System; University of California Los Angeles
摘要：The question addressed here is whether, using Hawkes models. the distribution of SARS-CoV-2 (Covid-19) transmission times can be estimated accurately with only case-count data. We fit Hawkes models with varying productivities to each of the 50 United States individually, estimating for each state a transmission time density, both nonparametrically and using a normal approximation. We find that, for nearly all states, the estimated transmission times are centered near seven days with a standard...
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作者：Trangucci, Rob; Chen, Yang; Zelner, Jon
作者单位：University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan
摘要：Characterizing the cumulative burden of COVID-19 by race/ethnicity is of the utmost importance for public health researchers and policy makers in order to design effective mitigation measures. This analysis is hampered, however, by surveillance case data with substantial missingness in race and ethnicity covariates. Worse yet, this missingness likely depends on the values of these missing covariates; that is, they are not-missing-at-random (NMAR). We propose a Bayesian parametric model that le...
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作者：Lee, Duncan
作者单位：University of Glasgow
摘要：Spatially aggregated disease-count data relating to a set of nonoverlap-ping areal units are often used to make inference on population-level disease risk. This includes the identification of risk boundaries, which are locations where there is a sizeable change in risk between geographically neighbouring areal units. Existing studies provide spatially discrete inference on the areal unit footprint, which forces the boundaries to coincide with the entire geo-graphical border between neighbourin...
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作者：Legrand, Juliette; Ailliot, Pierre; Naveau, Philippe; Raillard, Nicolas
作者单位：Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Universite Paris Saclay; CEA; Universite Paris Saclay; Universite de Bretagne Occidentale; Ifremer
摘要：The characterisation of future extreme wave events is crucial because of their multiple impacts, covering a broad range of topics such as coastal flood hazard, coastal erosion, reliability of offshore and coastal structures. The main goal of this paper is to propose and study a stochastic simulator that, given offshore conditions (peak direction Dp, peak period Tp and moderately high significant wave heights Hs), produces jointly offshore and coastal ex-treme Hs, a quantity measuring the wave ...
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作者：Zhu, Xiaochen; Slawski, Martin; Tang, Liansheng
作者单位：George Mason University; State University System of Florida; University of Central Florida
摘要：Biometric traits, such as fingerprints, facial images, and teeth impres-sions, are often used in forensic analysis to identify crime suspects. Matching such biometric traits is not perfect, and recent reports have indicated the need for quantifiable measures of error rates for (these) possible matches. Often, comparisons between two sets of a trait are scored with a higher score indi-cating a higher likelihood that the sets are a match. Adjustment of the cutoff for which a match is declared yi...
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作者：Michelot, Theo; Glennie, Richard; Thomas, Len; Quick, Nicola; Harris, Catriona m.
作者单位：Dalhousie University; University of St Andrews; Duke University
摘要：There is great interest in ecology to understand how wild animals are affected by anthropogenic disturbances, such as sounds. For example, behavioural response studies are an important approach to quantify the impact of naval activity on marine mammals. Controlled exposure experiments are undertaken where the behaviour of animals is quantified before, during, and after exposure to a controlled sound source, often using telemetry tags (e.g., accelerometers or satellite trackers). Statistical mo...
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作者：Marcelli, Agnese; Di Biase, Rosa Maria; Corona, Piermaria; Stehman, Stephen V.; Fattorini, Lorenzo
作者单位：Tuscia University; University of Milano-Bicocca; Consiglio per la Ricerca in Agricoltura e L'analisi Dell'economia Agraria (CREA); State University of New York (SUNY) System; State University of New York (SUNY) College of Environmental Science & Forestry; University of Siena
摘要：Land use/land cover mapping is usually performed by classifying satellite imagery (e.g., Landsat, Sentinel) for the whole survey region using classification algorithms implemented with training data. Subsequently, probabilistic samples are usually implemented with the main purpose of assessing the accuracy of these maps by comparing the map class and the ground condition determined for the sampled units. The main proposal of this paper is to directly exploit these probabilistic samples to esti...
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作者：Ben-Michael, Eli; Feller, Avi; Rothstein, Jesse
作者单位：Carnegie Mellon University; Carnegie Mellon University; University of California System; University of California Berkeley; University of California System; University of California Berkeley; University of California System; University of California Berkeley
摘要：In a pilot program during the 2016-17 admissions cycle, the University of California, Berkeley invited many applicants for freshman admission to submit letters of recommendation. This proved controversial within the university, with concerns that this change would further disadvantage applicants from disadvantaged groups. To inform this debate, we use this pilot as the basis for an observational study of the impact of submitting letters of recommendation on subsequent admission, with the goal ...
