Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Recolector de Cienci...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
UCrea
Master thesis . 2020
License: CC BY NC ND
Data sources: UCrea
versions View all 4 versions
addClaim

Assessing normality in stationary stochastic processes

Evaluación de normalidad en procesos estocásticos estacionarios
Authors: Alonzo Matamoros, Izhar Asael;

Assessing normality in stationary stochastic processes

Abstract

RESUMEN: Normalidad (un conjunto de observaciones son muestreadas de un Proceso Gaussiano) es un supuesto importante en una gran cantidad de modelos estadísticos. Debido a eso, desarrollar procedimientos para corroborar estos supuestos es un tema que ha ganado popularidad en los últimos años. Existe una gran cantidad de literatura para el caso de variables aleatorias independientes e identicamente distribuidas, pero, este no es el caso en el contexto de procesos estocásticos estacionarios, donde el supuesto de independencia no se mantiene. Algunas prue- bas de hipótesis han sido propuestas a traves de los años para resolver esta problemática. El objetivo de este trabajo es presentar una discusión de las pruebas más utilizadas para probar normalidad en procesos estacionarios, tales como Epps, Lobato y Velasco, las proyecciones aleatorias, y Psaradakis y Vavra. Para diagnostico de modelos en un enfoque Bayesiano, proponemos una metodología alternativa para la corroboración de supuestos inspirada en los resultados del método de las proyecciones aleatorias con prometedores resultados. Adicional- mente, presentamos nuestro implementado paquete nortsTest, un paquete en R que realiza las pruebas mencionadas anteriormente.

ABSTRACT: Normality (a set of observations being sampled from a Gaussian process) is an important as- sumption in a wide variety of statistical models. Therefore, developing procedures for testing this assumption is a topic that has gained popularity over several years. Extensive literature exists on goodness of fit tests for normality under the assumption of independent identical distributed random variables. However, this is not the case for the context of stationary stochastic process, case in which the independence assumption is violated. For this matter, several tests have been proposed over the years. The aim of this work is to present a discus- sion and references of the most common tests for normality in stationary processes, such as Epps, Lobato and Velasco, the random projections, and Psaradakis and Vavra. For assessing model adequacy in a Bayesian approach,we propose an alternative methodology for checking model’s assumptions inspired by the random projection results with promising results, in all the designed case studies. Additionally we present our implemented nortsTest package, an R package that performs all the reviewed tests mentioned above.

Máster en Matemáticas y Computación

Country
Spain
Related Organizations
Keywords

Stationarity, Model’s diagnostic, Procesos estocasticos, Pruebas de hipótesis, Diagnostico de modelos, Estacionaridad, Hypothesis test, Gaussian process, Stochastic process, Procesos Gaussianos

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
    OpenAIRE UsageCounts
    Usage byUsageCounts
    visibility views 64
    download downloads 105
  • 64
    views
    105
    downloads
    Powered byOpenAIRE UsageCounts
Powered by OpenAIRE graph
Found an issue? Give us feedback
visibility
download
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
downloads
OpenAIRE UsageCountsDownloads provided by UsageCounts
0
Average
Average
Average
64
105
Green