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Integrated variance forecasting: Model based vs. reduced form
DOI:10.1016/j.jeconom.2011.02.004.png)
Abstract
En 中文
This paper compares model-based and reduced-form forecasts of financial volatility when high-frequency return data are available. We derived exact formulas for the forecast errors and analyzed the contribution of the wrong data modeling and errors in forecast inputs. The comparison is made for feasible forecasts, i.e., we assumed that the true data generating process, latent states and parameters are unknown. As an illustration, the same comparison is carried out empirically for spot 5 min returns of DM/USD exchange rates. It is shown that the comparison between feasible reduced-form and model-based forecasts is not always in favor of the latter in contrast to their infeasible versions. The reduced-form approach is generally better for long-horizon forecasting and for short-horizon forecasting in the presence of microstructure noise. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:
Volatility forecasting
High-frequency data
Reduced-form methods
Model misspecification
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