Combining forecast densities from VARs with uncertain instabilities

Anne Sofie Jore, James Mitchell and Shaun Vahey
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Anne Sofie Jore: Norges Bank, Oslo, Norway, Postal: Norges Bank, Oslo, Norway

Journal of Applied Econometrics, 2010, vol. 25, issue 4, 621-634

Abstract: Recursive-weight forecast combination is often found to an ineffective method of improving point forecast accuracy in the presence of uncertain instabilities. We examine the effectiveness of this strategy for forecast densities using (many) vector autoregressive (VAR) and autoregressive (AR) models of output growth, inflation and interest rates. Our proposed recursive-weight density combination strategy, based on the recursive logarithmic score of the forecast densities, produces well-calibrated predictive densities for US real-time data by giving substantial weight to models that allow for structural breaks. In contrast, equal-weight combinations produce poorly calibrated forecast densities for Great Moderation data. Copyright © 2010 John Wiley & Sons, Ltd.

Date: 2010
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Related works:
Working Paper: Combining forecast densities from VARs with uncertain instabilities (2008)
Working Paper: Combining Forecast Densities from VARs with Uncertain Instabilities (2008)
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DOI: 10.1002/jae.1162

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