2025 : 9 : 29

Mehdi Omidi

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Basic Science
Address:
Phone:

Research

Title
Using Copulas to Model the Spatial Point Pattern Data
Type
Presentation
Keywords
patial point pattern‎, ‎Copula‎, ‎Monte Carlo method‎.
Year
2016
Researchers Mehdi Omidi ، Mohsen Mohammadzadeh ، Jorge Mateu

Abstract

Dependent count discrete data arise in the areas of‎ ‎spatial point pattern process‎. ‎In this fields‎, ‎number of points in‎ ‎any arbitrary region are affected by the distance to the especial‎ ‎focus‎. ‎For analysis of these points it is necessary to find the‎ ‎correlation structure of counts variables and the distance to the‎ ‎special focus‎. ‎These dependency can be considered as the‎ ‎Poisson-Weibull distribution for analysis of spatially dependent‎ ‎discrete-continues data‎. ‎In this paper‎, ‎by implementing the‎ ‎introducing of concentric buffers around to the especial focus and‎ ‎identifying the properties of valid spatial point pattern copula‎, ‎the count-distance based data are modeled‎. ‎Next‎, ‎for prediction of‎ ‎counts‎, ‎based on continuous extension of counts random variables a‎ ‎function was achieved and it is approximated by Monte Carlo method‎. ‎Finally‎, ‎based on achieved function we predict the numbers of Rats‎ ‎in some important regions of Madrid city.