Showing 1 - 10 of 14
El modelo gaussiano GARCH(1,1) ha sido empleado, tradicionalmente, en el estudio de la tasa de cambio; sin embargo, un número importante de estudios recientes (utilizando modelos FIGARCH e HYGARCH) ha encontrado evidencia de persistencia en su volatilidad. En este trabajo, usando una estrategia...
Persistent link: https://www.econbiz.de/10005603782
Castaño et al. (2008) proposed a test to investigate the existence of long memory based on the fractional differencing parameter of an ARFIMA (p, d, q) model. They showed that using an autoregressive approximation with order equal to the nearest integer of p* = T1/3 for the short-term component...
Persistent link: https://www.econbiz.de/10008852450
This paper asks whether the ‘leverage effect’ –as defined by Black (1976) for stock markets– is also a characteristic of foreign exchange markets. The study focuses on five Latin American emerging markets which have adopted a floating exchange regime. It
Persistent link: https://www.econbiz.de/10005510150
Resumen: En este artículo se presenta la evolución d el mercado laboral colombiano, tanto en el largo como en el corto plazo, así como una evaluación de los impactos de la reforma laboral de 2002 sobre la generación y calidad del empleo. Las estimaciones muestran que el empleo en las siete...
Persistent link: https://www.econbiz.de/10005466459
In regression analysis, it is frequently required to transform the dependent variable in order to obtain additivity and normal errors with constant variance. Box and Cox (1964) proposed a parametric power transformation based on the assumption of normality with the aim to achieve these goals....
Persistent link: https://www.econbiz.de/10010902324
In this work, we present a modification of the hypothesis testing procedure for the existence of long memory in the stationary and invertible ARFIMA(p,d,q) process proposed by Castaño, Gómez and Gallón (2008). This modification allows assessing the existence of a fractional root in a...
Persistent link: https://www.econbiz.de/10010902335
Frecuentemente los beneficiarios de los programas sociales del Estado son identificados por medio de indicadores aproximados de los recursos (proxy means test), los cuales tratan de medir el bienestar de los inviduos del hogar. Uno de los más empleados es el predictor de una regresión del...
Persistent link: https://www.econbiz.de/10004993705
En este trabajo se presentan algunos métodos de combinación de pronósticos de diferentes modelos econométricos. Estas metodologías tienen como principal objetivo encontrar una combinación lineal de pronósticos de diferentes modelos que produzca una predicción mejorada en términos de...
Persistent link: https://www.econbiz.de/10005783907
Many of the time series used in practice are monthly observations and due to the fact that the number of times any weekday occurs, depends on the month in question, the series can be influenced by changes in the number of working days. Some of these series can also be influenced by other...
Persistent link: https://www.econbiz.de/10008876178
This paper tries to test an economic explanation of the industrial demand for electricity in Colombia during the period 1970-1983. The estimation of the translog equations shows the complementary or substitutability between energy and other inputs in the industrial production function. After...
Persistent link: https://www.econbiz.de/10008876180