Results 11 to 20 of about 2,674 (172)
The powerbend distribution provides a unified model for the species abundance distribution across animals, plants and microbes [PDF]
Nature CommunicationsRemarkably, almost every ecological community investigated to date is composed of many rare species and a few abundant species. While the precise nature of this species abundance distribution is believed to reflect fundamental ecological principles ...
Yingnan Gao, Ahmed Abdullah, Martin Wu
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A multivariate Poisson-lognormal regression model for prediction of crash counts by severity, using Bayesian methods [PDF]
Accident Analysis and Prevention, 2008 Numerous efforts have been devoted to investigating crash occurrence as related to roadway design features, environmental factors and traffic conditions. However, most of the research has relied on univariate count models; that is, traffic crash counts at different levels of severity are estimated separately, which may neglect shared information in ...
Kara Kockelman, Paul Damien
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MethodsX, 2021 In Barcelona, Advanced Stop Lines (ASL) for motorcycles, were implemented since 2009. This paper aims to describe the process followed in determining the best statistical model to analyse the effectiveness of ASL in preventing road traffic injury ...
Elena Santamariña-Rubio +1 more
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Bivariate macro-level safety analysis of non-motorized vehicle crashes and crash-involved road users
Journal of Traffic and Transportation Engineering (English ed. Online), 2022 The high risk of injury resulting from non-motorized vehicle (NMV) crashes has created the goal of using the 3E strategy to comprehensively improve NMV safety.
Zhicheng Dai, Xuesong Wang
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Bayesian Estimation of Parameters Correlation of Bivariate Poisson Distribution [PDF]
فصلنامه پژوهشهای اقتصادی ایران, 2016 In this study, based on Bayesian Generalized Linear Models, correlation between the parameters of two Poisson distributions was computed. Due to lack of the closed form for posterior distribution, hierarchical Bayesian statistics using the Metropolis ...
Farzad Eskandari
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Algorithms, 2021 In this article we present a class of mixed Poisson regression models with varying dispersion arising from non-conjugate to the Poisson mixing distributions for modelling overdispersed claim counts in non-life insurance.
George Tzougas, Natalia Hong, Ryan Ho
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ISPRS International Journal of Geo-Information, 2021 The outbreak of COVID-19 has constantly exposed health care workers (HCWs) around the world to a high risk of infection. To more accurately discover the infection differences among high-risk occupations and institutions, Hubei Province was taken as an ...
Hui Ren +3 more
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Recovering the nonlinear density field from the galaxy distribution with a Poisson-Lognormal filter [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 17 pages, 9 figures, 1 ...
Kitaura, Francisco Shu +2 more
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Log-Normal or Over-Dispersed Poisson?
Risks, 2018 Although both over-dispersed Poisson and log-normal chain-ladder models are popular in claim reserving, it is not obvious when to choose which model. Yet, the two models are obviously different. While the over-dispersed Poisson model imposes the variance
Jonas Harnau
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A hierarchical poisson log-normal model for network inference from RNA sequencing data. [PDF]
PLoS ONE, 2013 Gene network inference from transcriptomic data is an important methodological challenge and a key aspect of systems biology. Although several methods have been proposed to infer networks from microarray data, there is a need for inference methods able ...
Mélina Gallopin +2 more
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