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Prueba de HEGY en R: Una guía

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  • Julio César Alonso
  • Paul Seeman

Abstract

Este documento es una guía práctica cuyo fin es el de brindarle ayuda a la persona que trabaje con modelos de series de tiempo que necesite emplear la prueba de HEGY. Es común encontrar discusiones acerca de las implicaciones de la presencia de raíces unitarias en las series, sin embargo, recientemente ha cobrado importancia el estudio de las raíces unitarias estacionales en los datos de frecuencia trimestral o mensual. En esta guía identificaremos los distintos tipos de raíces unitarias estacionales, la aplicación de la prueba HEGY para su identificación y la manera de solucionar el problema mediante una adecuada diferenciación de las series. También explicaremos paso a paso como realizar estos procedimientos en el software estadístico R. Por la forma didáctica como está escrito el documento, puede ser usado en un curso de series de tiempo en pregrado o de maestría o por profesionales que desean aplicar esta prueba.

Suggested Citation

  • Julio César Alonso & Paul Seeman, 2010. "Prueba de HEGY en R: Una guía," Apuntes de Economía 9098, Universidad Icesi.
    • Handle: RePEc:col:000131:009098
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    File URL: http://www.icesi.edu.co/departamentos/economia/images/hegy.pdf
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    References listed on IDEAS

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    1. Franses, Philip Hans, 1991. "Seasonality, non-stationarity and the forecasting of monthly time series," International Journal of Forecasting, Elsevier, vol. 7(2), pages 199-208, August.
    2. Hylleberg, S. & Engle, R. F. & Granger, C. W. J. & Yoo, B. S., 1990. "Seasonal integration and cointegration," Journal of Econometrics, Elsevier, vol. 44(1-2), pages 215-238.
    3. Engle, R. F. & Granger, C. W. J. & Hallman, J. J., 1989. "Merging short-and long-run forecasts : An application of seasonal cointegration to monthly electricity sales forecasting," Journal of Econometrics, Elsevier, vol. 40(1), pages 45-62, January.
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    Cited by:

    1. Alonso Cifuentes, Julio César & Arcila Vásquez, Andrés Mauricio & Montenegro Arana, Sebastián, 2016. "Herramientas de estabilización de los precios internos del azúcar en Colombia: ¿Funcionan?," Revista Lecturas de Economía, Universidad de Antioquia, CIE, issue 86, pages 105-126, December.
    2. Julio César Alonso Cifuentes & Andrés Mauricio Arcila Vásquez & Sebastián Montenegro Arana, 2017. "Internal price stabilization tools in the Colombian sugar market: Do they work?," Lecturas de Economía, Universidad de Antioquia, Departamento de Economía, issue 86, pages 105-126, Enero - J.
    3. Julio César Alonso & Andrés Mauricio Arcila, 2013. "Empleo del comportamiento estacional para mejorar el pronóstico de un commodity: el caso del mercado internacional del azúcar," Estudios Gerenciales, Universidad Icesi, December.

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