Abstract: The forecast evaluation literature has traditionally focused on
methods for assessing point-forecasts. However, in the context of risk
models, interest centers on more than just a single point of the forecast
distribution. For example, value-at-risk (VaR) models, which are
currently in extremely wide, use form interval forecasts. Many
other important financial calculations also involve estimates not
summarized by a point-forecast. Although some techniques are currently
available for assessing interval and density forecasts, none are
suitable for sample sizes typically available. This paper suggests a new
approach to evaluating such forecasts. It requires evaluation of the entire
forecast distribution, rather than a value-at-risk quantity. The information
content of forecast distributions combined with ex post loss realizations is
enough to construct a powerful test even with sample sizes as small as 100.
Keywords: Forecast, evaluation, risk, VaR
Full paper (133 KB PDF)
| Full paper (1112 KB Postscript)
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