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This paper presents a kriging method for spatial prediction of temporal intensity functions, for situations where a temporal point process is observed at different spatial locations. Assuming that several replications of the processes are…

统计方法学 · 统计学 2021-07-02 Daniel Gervini

A validated simulation model primarily requires performing an appropriate input analysis mainly by determining the behavior of real-world processes using probability distributions. In many practical cases, probability distributions of the…

应用统计 · 统计学 2014-09-01 Issac Shams , Saeede Ajorlou , Kai Yang

Extreme events with potential deadly outcomes, such as those organized by terror groups, are highly unpredictable in nature and an imminent threat to society. In particular, quantifying the likelihood of a terror attack occurring in an…

应用统计 · 统计学 2021-11-02 Lekha Patel , Lyndsay Shand , J. Derek Tucker , Gabriel Huerta

IMPORTANCE: Time-to-event outcomes are commonly used in clinical trials and biomarker discovery studies and have been primarily analyzed using Cox proportional hazards models. But it's unclear which statistical models should be recommended…

统计方法学 · 统计学 2022-08-23 Rong Lu

The log Gaussian Cox process is a flexible class of Cox processes, whose intensity surface is stochastic, for incorporating complex spatial and time structure of point patterns. The straightforward inference based on Markov chain Monte…

统计计算 · 统计学 2016-12-02 Shinichiro Shirota , Alan. E. Gelfand

Recent years have seen an increased interest in the application of methods and techniques commonly associated with machine learning and artificial intelligence to spatial statistics. Here, in a celebration of the ten-year anniversary of the…

统计方法学 · 统计学 2022-01-25 Tin Lok James Ng , Andrew Zammit-Mangion

This paper considers the posterior contraction of non-parametric Bayesian inference on non-homogeneous Poisson processes. We consider the quality of inference on a rate function $\lambda$, given non-identically distributed realisations,…

统计理论 · 数学 2019-06-26 James A. Grant , David S. Leslie

Accurate spatiotemporal modeling of conditions leading to moderate and large wildfires provides better understanding of mechanisms driving fire-prone ecosystems and improves risk management. We here develop a joint model for the occurrence…

统计方法学 · 统计学 2021-07-15 Jonathan Koh , François Pimont , Jean-Luc Dupuy , Thomas Opitz

Non-homogeneous Poisson processes are used in a wide range of scientific disciplines, ranging from the environmental sciences to the health sciences. Often, the central object of interest in a point process is the underlying intensity…

统计方法学 · 统计学 2022-02-11 Tin Lok James Ng , Andrew Zammit-Mangion

We develop a new tool, the time inhomogeneous Poisson equation in the whole space and with a terminal condition at infinity, to study the asymptotic behavior of the non-autonomous multi-scale stochastic system with irregular coefficients,…

概率论 · 数学 2024-12-13 Ling Wang , Pengcheng Xia , Longjie Xie , Li Yang

There is a lack of point process models on linear networks. For an arbitrary linear network, we consider new models for a Cox process with an isotropic pair correlation function obtained in various ways by transforming an isotropic Gaussian…

统计理论 · 数学 2024-01-17 Jesper Møller , Jakob G. Rasmussen

Gaussian process (GP) modulated Cox processes are widely used to model point patterns. Existing approaches require a mapping (link function) between the unconstrained GP and the positive intensity function. This commonly yields solutions…

机器学习 · 统计学 2019-03-01 Andrés F. López-Lopera , ST John , Nicolas Durrande

Several stochastic processes related to transient L\'evy processes with potential densities $u(x,y)=u(y-x)$, that need not be symmetric nor bounded on the diagonal, are defined and studied. They are real valued processes on a space of…

概率论 · 数学 2013-11-11 Yves Le Jan , Michael B. Marcus , Jay Rosen

A central focus in survival analysis is examining how covariates influence survival time. These covariate effects are often found to be either time-varying, heterogeneous - such as being specific to patients, treatments, or subgroups - or…

统计方法学 · 统计学 2025-01-24 Niklas Hagemann , Thomas Kneib , Kathrin Möllenhoff

This article addresses the problem of functional supervised classification of Cox process trajectories, whose random intensity is driven by some exogenous random covariable. The classification task is achieved through a regularized convex…

统计理论 · 数学 2014-10-16 Gérard Biau , Benoît Cadre , Quentin Paris

Crime prevention measures, aiming for the effective and efficient spending of public resources, rely on the empirical analysis of spatial and temporal data for public safety outcomes. We perform a variable-density cluster analysis on crime…

应用统计 · 统计学 2025-12-09 Ben Moews

Gaussian processes are arguably the most important class of spatiotemporal models within machine learning. They encode prior information about the modeled function and can be used for exact or approximate Bayesian learning. In many…

统计方法学 · 统计学 2024-09-16 Iskander Azangulov , Andrei Smolensky , Alexander Terenin , Viacheslav Borovitskiy

A compound Poisson process whose parameters are all unknown is observed at finitely many equispaced times. Nonparametric estimators of the jump and L\'evy distributions are proposed and functional central limit theorems using the uniform…

统计理论 · 数学 2017-02-06 Alberto J. Coca

Multivariate point processes are widely applied to model event-type data such as natural disasters, online message exchanges, financial transactions or neuronal spike trains. One very popular point process model in which the probability of…

统计理论 · 数学 2023-01-27 Deborah Sulem , Vincent Rivoirard , Judith Rousseau

Many real-world objects can be modeled as a stream of events on the nodes of a graph. In this paper, we propose a class of graphical event models named temporal point process graphical models for representing the temporal dependencies among…

统计方法学 · 统计学 2021-10-25 Yalong Lyu , Huiyuan Wang , Wei Lin