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Searching for the DGP when forecasting - Is it always meaningful for small samples?


  • Jonas Andersson

    () (Norwegian School of Economics and Business Administration)


In this paper the problem of choosing a univariate forecasting model for small samples is investigated. It is shown that, a model with few parameters, frequently, is better than a model which coincides with the data generating process (DGP) (with estimated parameter values). The exponential smoothing algorithms are, once more, shown to perform remarkably well for some types of data generating processes, in particular for short-term forecasts. All this is shown by means of Monte Carlo simulations and a time series of realized volatility from the CAC40 index. The results speaks in favour of a negative answer to the question posed in the title of this paper.

Suggested Citation

  • Jonas Andersson, 2006. "Searching for the DGP when forecasting - Is it always meaningful for small samples?," Economics Bulletin, AccessEcon, vol. 3(28), pages 1-9.
  • Handle: RePEc:ebl:ecbull:eb-06c20070

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    References listed on IDEAS

    1. Kim, Jae H., 2003. "Forecasting autoregressive time series with bias-corrected parameter estimators," International Journal of Forecasting, Elsevier, vol. 19(3), pages 493-502.
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    JEL classification:

    • C2 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables
    • C0 - Mathematical and Quantitative Methods - - General


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