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Forecasting Macroeconomic Variables under Model Instability

Davide Pettenuzzo () and Allan G Timmermann

No 11355, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We compare different approaches to accounting for parameter instability in the context of macroeconomic forecasting models that assume either small, frequent changes versus models whose parameters exhibit large, rare changes. An empirical out-of-sample forecasting exercise for U.S. GDP growth and inflation suggests that models that allow for parameter instability generate more accurate density forecasts than constant-parameter models although they fail to produce better point forecasts. Model combinations deliver similar gains in predictive performance although they fail to improve on the predictive accuracy of the single best model which is a specification that allows for time-varying parameters and stochastic volatility.

Keywords: GDP growth; inflation; regime switching; stochastic volatility; time-varying parameters (search for similar items in EconPapers)
JEL-codes: C22 C53 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ecm, nep-for and nep-ore
Date: 2016-06
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