Results 21 to 30 of about 11,472,849 (292)

A Simple Spatial Method for Identifying Point Clusters by Neighbourhood Relationships

open access: yesEcologies, 2021
Point events can be distributed regularly, randomly, or in clusters. A cluster of points is defined by the distance from which any point included in a cluster is farther from any other point outside the cluster. Many solutions and methods are possible to
Neftalí Sillero
doaj   +1 more source

Modelling count data with overdispersion and spatial effects [PDF]

open access: yes, 2005
In this paper we consider regression models for count data allowing for overdispersion in a Bayesian framework. Besides the inclusion of covariates, spatial effects are incorporated and modelled using a proper Gaussian conditional autoregressive prior ...
Gschlößl, Susanne, Czado, Claudia
core   +1 more source

Spatial cluster point processes related to Poisson–Voronoi tessellations [PDF]

open access: yesStochastic Environmental Research and Risk Assessment, 2014
We discuss how to construct models for cluster point processes within ‘territories’ modelled by $$d$$ -dimensional Voronoi cells whose nuclei are generated by a latent Poisson process (where the planar case
Møller, Jesper   +1 more
openaire   +2 more sources

Use of cumulative sums for detection of changepoints in the rate parameter of a poisson process [PDF]

open access: yes, 2004
This paper studies the problem of multiple changepoints in rate parameter of a Poisson process. We propose a binary segmentation algorithm in conjunction with a cumulative sums statistic for detection of changepoints such that in each step we need only ...
Galeano, Pedro
core   +1 more source

Coverage Probability and Area Spectral Efficiency of Clustered Linear Unmanned Vehicle Sensor Networks

open access: yesSensors, 2017
In this paper, we consider clustered unmanned vehicle (UV) sensor networks for swarm sensing applications in a linear structure such as highway, tunnel, underwater pipelines, power lines, and international border.
Haejoon Jung, In-Ho Lee
doaj   +1 more source

MODÉLISATION PRÉVISIONNELLE PAR HAWKES PROCESS DES CRISES ECONOMIQUES

open access: yesRevue Economie, Gestion et Société, 2020
The object of this article is to work on the modeling of recurrent shocks likely to affect an economy in the period of economic crises, we take into consideration the endogenous aspect of such shocks by basing our analysis on a model inspired by the ...
Habib ELFATHAOUI
doaj   +5 more sources

Uplink Performance Analysis of User- Centric Small Cell Aided Dense HCNets With Uplink-Downlink Decoupling

open access: yesIEEE Access, 2020
The deployment of low power small base stations (SBSs) in high density user areas enhances the performance of heterogeneous cellular networks (HCNets).
Arif Ullah   +4 more
doaj   +1 more source

Modeling and Analysis of D2D Millimeter-Wave Networks With Poisson Cluster Processes [PDF]

open access: yesIEEE Transactions on Communications, 2017
This paper has been published in IEEE Transactions on Communications.
Wenqiang Yi   +2 more
openaire   +3 more sources

ESTIMATING THE INTENSITY OF GERM-GRAIN MODELS WITH OVERLAPPING GRAINS

open access: yesImage Analysis and Stereology, 2011
Formulas are derived for the spherical contact distribution of a planar germ-grain model Z with circular grains where the germs formeither a 'segment cluster' process or a 'line-based' Poisson point process.
Hamid Ghorbani, Dietrich Stoyan
doaj   +1 more source

Caching modeling and energy analyzing of cell-free wireless heterogeneous networks with beta Ginibre point process

open access: yesDigital Communications and Networks, 2023
Cell-free Wireless Heterogeneous Networks (HetNets) have emerged as a technological alternative for conventional cellular networks. In this paper, we study the spatially correlative caching strategy, the energy analysis, and the impact of parameter β on ...
Linlin Feng   +3 more
doaj   +1 more source

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