Stochastic Pareto diffusion process : Statistical analysis and computational issues. Simulation and Application

Autor: Nafidi Ahmed, Makroz Ilyasse, Achchab Boujemâa, Gutiérrez-Sánchez Ramón
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Moroccan Journal of Pure and Applied Analysis, Vol 9, Iss 1, Pp 127-140 (2023)
Druh dokumentu: article
ISSN: 2351-8227
DOI: 10.2478/mjpaa-2023-0009
Popis: We propose a novel diffusion process having a mean function equal to the Pareto probability density function up to a constant of proportionality. We examine the probabilistic properties of the proposed model. Then, referring to the problem of statistical inference, we describe the approach employed to tackle the issue of obtaining parameter estimates by maximizing the likelihood function based on discrete sampling. This estimation reduces to solving a set of complex equations, that is accomplished using the simulated annealing algorithm. A simulation study is also given to validate the methodology presented. Finally, using a real-world example of the Moroccan child mortality rate, we obtain the fits and forecasts by employing the suggested stochastic process and nonlinear regression model.
Databáze: Directory of Open Access Journals