Forecasting the South African economy: a hybrid-DSGE approach
Purpose - This paper aims to develops an estimable hybrid model that combines the micro-founded DSGE model with the flexibility of the atheoretical VAR model. Design/methodology/approach - The model is estimated via the maximum likelihood technique based on quarterly data on real gross national product (GNP), consumption, investment and hours worked, for the South African economy, over the period of 1970:1 to 2000:4. Based on a recursive estimation using the Kalman filter algorithm, the out-of-sample forecasts from the hybrid model are then compared with the forecasts generated from the Classical and Bayesian variants of the VAR for the period 2001:1-2005:4. Findings - The results indicate that, in general, the estimated hybrid-DSGE model outperforms the classical VAR, but not the Bayesian VARs in terms of out-of-sample forecasting performances. Research limitations/implications - The model lacks nominal shocks and needs to be extended into a small open economy framework. Practical implications - The paper was able to show that, even though the DSGE model is outperformed by the BVAR, a microfounded theoretical DSGE model has a future in forecasting the South African economy. Originality/value - To the best of the authors' knowledge, this is the first attempt to use an estimable DSGE model to forecast the South African economy.
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Volume (Year): 37 (2010)
Issue (Month): 2 (May)
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