Beating the VAR: Improving Swedish GDP forecasts using error and intercept corrections
(English)In: Journal of Forecasting, ISSN 0277-6693, E-ISSN 1099-131XArticle in journal (Refereed) Accepted
This paper examines the forecast accuracy of an unrestricted Vector Autoregressive (VAR) model for GDP, relative to a comparable Vector Error Correction model (VECM) that recognizes that the data is characterized by co-integration. In addition, an alternative forecast method, Intercept Correction, is considered for further comparison. Recursive out-of-sample forecasts are generated for both models and forecast techniques. The generated forecasts for each model are objectively evaluated by a selection of evaluation measures and equal accuracy tests. The result shows that the VECM consistently outperform the VAR models. Further, intercept correction enhances the forecast accuracy when applied to the VECM, while there is no such indication when applied to the VAR model. For certain forecast horizons there is a signicant di erence in forecast ability between the intercept corrected VECM compared to the VAR model.
Probability Theory and Statistics
Research subject Statistics
IdentifiersURN: urn:nbn:se:uu:diva-239908OAI: oai:DiVA.org:uu-239908DiVA: diva2:775606