Modelo espacial bayesiano de Cox log-gaussiano usando SPDE para estimar la ocurrencia de incendios forestales en el Perú
No hay miniatura disponible
Fecha
2023-10-02
Autores
Título de la revista
ISSN de la revista
Título del volumen
Editor
Pontificia Universidad Católica del Perú
DOI
Resumen
Los incendios forestales se han venido incrementando en las últimas cuatro décadas a
nivel mundial. En el Perú de acuerdo a los datos del INDECI, en los últimos 10 años se
evidencia una tendencia creciente. La ocurrencia de estos eventos representa la degradación
de la calidad del aire, de la flora y pone en grave riesgo a muchas personas y zonas agrícolas.
Para una adecuada evaluación de uno de los componentes del riesgo generado por estos
eventos, se requiere analizar la intensidad de su ocurrencia a través de herramientas flexibles.
En este contexto se estudia el patrón puntual de estos eventos, a través del modelo espacial
bayesiano de Cox log-gaussiano (LGCP) bajo el enfoque de ecuaciones diferenciales parciales
estocásticas (SPDE). Los distintos modelos que se evalúan corresponden a la clase de modelos
gaussianos latentes y jerárquicos, lo cual nos permite realizar su estimación bajo inferencia
bayesiana empleando la aproximación de Laplace anidada integrada (INLA), en tiempos que
posibilitan una respuesta rápida y eficiente ante el riesgo generado por estos eventos.
Forest fires have been increasing in the last four decades worldwide. In Peru according to INDECI data, there has been an increasing trend in the last 10 years. The occurrence of these events represents the degradation of air quality, flora and puts many people and agricultural areas at serious risk. For an adequate evaluation of one of the risk components generated by these events, it is necessary to analyze the intensity of their occurrence through flexible tools. In this context, the point pattern of these events is studied, through the Bayesian spatial model of the log Gaussian Cox process(LGCP) under the approach of stochastic partial differential equations (SPDE). The different models that are evaluated correspond to the class of latent and hierarchical Gaussian models, which allows us to estimate them under Bayesian inference using the integrated nested Laplace approximation (INLA), in times that allow a quick and efficient response to the risk generated by these events.
Forest fires have been increasing in the last four decades worldwide. In Peru according to INDECI data, there has been an increasing trend in the last 10 years. The occurrence of these events represents the degradation of air quality, flora and puts many people and agricultural areas at serious risk. For an adequate evaluation of one of the risk components generated by these events, it is necessary to analyze the intensity of their occurrence through flexible tools. In this context, the point pattern of these events is studied, through the Bayesian spatial model of the log Gaussian Cox process(LGCP) under the approach of stochastic partial differential equations (SPDE). The different models that are evaluated correspond to the class of latent and hierarchical Gaussian models, which allows us to estimate them under Bayesian inference using the integrated nested Laplace approximation (INLA), in times that allow a quick and efficient response to the risk generated by these events.
Descripción
Palabras clave
Incendios forestales--Análisis espacial (Estadística), Recursos forestales--Conservación--Perú, Procesos puntuales, Procesos de Gauss
Citación
Colecciones
item.page.endorsement
item.page.review
item.page.supplemented
item.page.referenced
Licencia Creative Commons
Excepto se indique lo contrario, la licencia de este artículo se describe como info:eu-repo/semantics/openAccess