Publication: Forecasting with periodic models: A comparison with time invariant coefficient models.
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1996-09
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Facultad de Ciencias Económicas y Empresariales. Instituto Complutense de Análisis Económico (ICAE)
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Utilizando 17 variables trimestrales macroeconómicas del Reino Unido, caracterizadas por Franses y Romijn (1993) como periódicamente integradas, hemos encontrado que modelos períodicos no restringidos no prevén mejor que modelos univariantes. En ausencia de otro tipo de restricciones, cuando sólo se tienen en cuenta explicitamente las relaciones de cointegración entre trimestres, tampoco se mejoran la previsiones de los modelos univariantes. Sin embargo, cuando los modelos periodicos se restringen adecuadamente, su capacidad predictiva mejora notablemente y el resultado negativo anterior se invierte. Las restricciones de homogeneidad en el comportamiento de los trimestres parecen ser cruciales en este sentido.
Working with seventeen UK macroeconomic variables, characterized as periodically integrated in Franses and Romijn(1993), we have found that unconstrained periodic models do not beat time invariant alternatives in forecasting, even when cointegrating relationships among the seasons are taken into account. However, when appropriately constrained, the forecasting performance of periodic models can be much better than that of non periodic models
Working with seventeen UK macroeconomic variables, characterized as periodically integrated in Franses and Romijn(1993), we have found that unconstrained periodic models do not beat time invariant alternatives in forecasting, even when cointegrating relationships among the seasons are taken into account. However, when appropriately constrained, the forecasting performance of periodic models can be much better than that of non periodic models
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