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Rince
Article . 2014 . Peer-reviewed
Data sources: Crossref
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CONICET Digital
Article . 2014
License: CC BY NC SA
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El tratamiento de la volatilidad en series de tiempo financieras

Authors: María de las Mercedes Abril;

El tratamiento de la volatilidad en series de tiempo financieras

Abstract

El objetivo primordial de esta investigación es el de examinar los métodos para tratar una gran variedad de datos con irregularidades que suceden en series de tiempo y en especial en aquellas referidas a la actividad financiera. Los modelos autorregresivos integrados de promedios móviles (o modelos ARIMA según sus siglas en inglés) son frecuentemente considerados como los que proveen la base principal para el modelado de cualquier serie de tiempo. Ahora bien, dada la tecnología actual, puede haber alternativas más atractivas y por sobre todo más eficientes. Numerosas series de tiempo financieras no tienen una media constante y también en la mayoría de los casos se observan fases en donde reina una relativa tranquilidad seguido de períodos de importantes cambios, o sea que la variabilidad cambia a través del tiempo. Dicho comportamiento es lo que recibe el nombre de volatilidad. Gran parte de la investigación actual se concentra en extender la metodología clásica de Box y Jenkins basada principalmente en los modelos de tipo ARIMA para analizar este tipo de comportamiento. Presentaremos un resumen de los métodos para el tratamiento de la volatilidad, la cual se define como la varianza de una variable aleatoria, comúnmente un retorno en el área financiera, condicional a toda la información pasada.

Fil: Abril, María de las Mercedes. Universidad Nacional de La Matanza; Argentina.

Country
Argentina
Keywords

FINANZAS, https://purl.org/becyt/ford/5.2, ECONOMETRIA, Series de Tiempo Financieras, Volatilidad, https://purl.org/becyt/ford/5, MODELOS ECONOMETRICOS, Variables Aleatorias, 658.403 3, ANALISIS DE SERIES CRONOLOGICAS, Varianza

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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!
0
Average
Average
Average
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