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Una generalización de los procesos estocásticos log-normal y de Gompertz como procesos de Itô

Authors: Gómez García, Juan; Buendía Moya, Fulgencio;

Una generalización de los procesos estocásticos log-normal y de Gompertz como procesos de Itô

Abstract

Estudiamos una ecuación diferencial estocástica de Itô que es una generalización de los modelos estocásticos logarítmico-normal y de Gomperz. Reducimos la ecuación mediante una transformación de cambio de estado a otra que resulta una generalización de la ecuación de Langevin, que rige el proceso de Uhlenbeck-Ornstein. A partir de la expresión analítica de las soluciones de ésta y de la original estudiamos las características estadísticas de ambos procesos solución, en particular los momentos de las distribuciones finito dimensionales, sus funciones de densidad de transición, las distribuciones límite y las condiciones de estacionariedad, obteniendo que la expresada generalización del proceso de U-O es el único proceso Gaussiano, Markoviano y estacionario no centrado en tiempo continuo. Por otra parte, se establece que las potencias del proceso lognormal-Gompertz generalizado satisfacen una E.D.E. del mismo tipo.

Keywords

Anàlisi estocàstica, Proceso de Gompertz, Proceso log-normal, Proceso de Uhlenbeck-Ornstein, :60 Probability theory and stochastic processes::60H Stochastic analysis [Classificació AMS], Ecuación diferencial estocástica, Ecuaciones de Kolomogorov, Classificació AMS::60 Probability theory and stochastic processes::60H Stochastic analysis, Stochastic analysis, Ecuación de Langevin

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selected citations
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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!
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