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Spanish Abstract: Este artículo tiene como objetivo comprobar la eficiencia en sentido semifuerte – de acuerdo a la definición de Fama (1970) – del mercado internacional del azúcar. Para lograr este objetivo, se seguirá a Ferré y Hall (2002), quienes demuestran que la existencia de...
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This paper evaluates the performance of 17 different parametric and non-parametric specifications and high frequency data for Colombian exchange market index (IGBC). We model the variance of the 10-minute returns using GARCH-M and TGARCH models that take in account the leverage effect, the...
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Spanish Abstract: Si bien es amplia la literatura que se ha dedicado a estudiar los hechos estilizados en las series de los rendimientos, para el caso colombiano solamente existe un trabajo que documenta estos hechos. Alonso y Arcos (2006) documentaron la presencia de cuatro hechos estilizados...
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The hierarchical structure of the Colombian Consumer Price Index (CPI) makes possible to calculate inflation as a linear combination of its subcomponents. We use SARIMA models to forecast each component of CPI and construct an forecast of inflation using a lineal combination of the forecasts of...
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