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There is growing recognition in both the experimental and modelling literature of the importance of spatial structure to the dynamics of viral infections in tissues. Aided by the evolution of computing power and motivated by recent…

定量方法 · 定量生物学 2025-07-08 Thomas Williams , James M. McCaw , James M. Osborne

The tau statistic $\tau$ uses geolocation and, usually, symptom onset time to assess global spatiotemporal clustering from epidemiological data. We test different factors that could affect graphical hypothesis tests of clustering or bias…

A new discrete-time shot noise Cox process for spatiotemporal data is proposed. The random intensity is driven by a dependent sequence of latent gamma random measures. Some properties of the latent process are derived, such as an…

统计方法学 · 统计学 2023-08-17 Federico Bassetti , Roberto Casarin , Matteo Iacopini

Ambulance demand estimation at fine time and location scales is critical for fleet management and dynamic deployment. We are motivated by the problem of estimating the spatial distribution of ambulance demand in Toronto, Canada, as it…

For a long time, many methods are developed to make temporal signal analyses based on time series. However, for geographical systems, spatial signal analyses are as important as temporal signal analyses. Nonstationary spatial and temporal…

物理与社会 · 物理学 2020-12-29 Yanguang Chen , Yuqing Long

Time-to-event analysis is a branch of statistics that has increased in popularity during the last decades due to its many application fields, such as predictive maintenance, customer churn prediction and population lifetime estimation. In…

机器学习 · 计算机科学 2024-03-13 Camila Fernandez , Chung Shue Chen , Chen Pierre Gaillard , Alonso Silva

The emergence of Covid-19 requires new effective tools for epidemiological surveillance. Spatio-temporal disease mapping models, which allow dealing with highly disaggregated spatial and temporal units of analysis, are a priority in this…

应用统计 · 统计学 2020-11-10 Miguel A. Martinez-Beneito , Jorge Mateu , Paloma Botella-Rocamora

In semantic segmentation, the accuracy of models heavily depends on the high-quality annotations. However, in many practical scenarios, such as medical imaging and remote sensing, obtaining true annotations is not straightforward and…

图像与视频处理 · 电气工程与系统科学 2026-04-07 Ryu Tadokoro , Tsukasa Takagi , Shin-ichi Maeda

High resolution satellite image sequences are multidimensional signals composed of spatio-temporal patterns associated to numerous and various phenomena. Bayesian methods have been previously proposed in (Heas and Datcu, 2005) to code the…

计算机视觉与模式识别 · 计算机科学 2007-09-20 Patrick Héas , Mihai Datcu

Spatial confounding is how is called the confounding between fixed and spatial random effects. It has been widely studied and it gained attention in the past years in the spatial statistics literature, as it may generate unexpected results…

Investigating relationships between response variables and covariates in areas such as environmental science, geoscience, and public health is an important endeavor. Based on a Bayesian mixture of finite mixtures model, we present a novel…

统计方法学 · 统计学 2023-06-06 Peng Zhao , Hou-Cheng Yang , Dipak K. Dey , Guanyu Hu

Geographic patterns in stroke mortality have been studied as far back as the 1960s, when a region of the southeastern United States became known as the "stroke belt" due to its unusually high rates of stroke mortality. While stroke…

统计方法学 · 统计学 2018-01-23 Harrison Quick , Lance A. Waller , Michele Casper

The availability of geocoded health data and the inherent temporal structure of communicable diseases have led to an increased interest in statistical models and software for spatio-temporal data with epidemic features. The open source R…

统计计算 · 统计学 2017-05-12 Sebastian Meyer , Leonhard Held , Michael Höhle

In employing spatial regression models for counts, we usually meet two issues. First, ignoring the inherent collinearity between covariates and the spatial effect would lead to causal inferences. Second, real count data usually reveal over…

统计方法学 · 统计学 2021-05-21 Mahsa Nadifar , Hossein Baghishani , Afshin Fallah

Binary regression models are commonly used in disciplines such as epidemiology and ecology to determine how spatial covariates influence individuals. In many studies, binary data are shared in a spatially aggregated form to protect privacy.…

统计方法学 · 统计学 2021-05-10 Nelson B. Walker , Trevor J. Hefley , Anne E. Ballmann , Robin E. Russell , Daniel P. Walsh

Spatio-temporal models for count data are required in a wide range of scientific fields and they have become particularly crucial nowadays because of their ability to analyse COVID-19-related data. Models for count data are needed when the…

应用统计 · 统计学 2021-04-16 María Victoria Ibáñez , Marina Martínez-Garcia , Amelia Simó

In several environmental applications data are functions of time, essentially con- tinuous, observed and recorded discretely, and spatially correlated. Most of the methods for analyzing such data are extensions of spatial statistical tools…

统计方法学 · 统计学 2011-06-28 Elvira Romano , Antonio Balzanella , Rosanna Verde

Time elapsed till an event of interest is often modeled using the survival analysis methodology, which estimates a survival score based on the input features. There is a resurgence of interest in developing more accurate prediction models…

机器学习 · 计算机科学 2024-07-23 Navid Seidi , Ardhendu Tripathy , Sajal K. Das

Spatially misaligned data can be fused by using a Bayesian melding model that assumes that underlying all observations there is a spatially continuous Gaussian random field process. This model can be used, for example, to predict air…

统计方法学 · 统计学 2024-06-06 Ruiman Zhong , André Victor Ribeiro Amaral , Paula Moraga

Spatiotemporal data analysis with massive zeros is widely used in many areas such as epidemiology and public health. We use a Bayesian framework to fit zero-inflated negative binomial models and employ a set of latent variables from…

统计方法学 · 统计学 2024-02-08 Qing He , Hsin-Hsiung Huang