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Finite sample weighting of recursive forecast errors
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DOI：10.1016/j.ijforecast.2015.05.003.png)
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摘要
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This paper proposes and tests a new framework for weighting recursive out-of-sample prediction errors according to their corresponding levels of in-sample estimation uncertainty. In essence, we show how to use the maximum possible amount of information from the sample in the evaluation of the prediction accuracy, by commencing the forecasts at the earliest opportunity and weighting the prediction errors. Via a Monte Carlo study, we demonstrate that the proposed framework selects the correct model from a set of candidate models considerably more often than the existing standard approach when only a small sample is available. We also show that the proposed weighting approaches result in tests of equal predictive accuracy that have much better sizes than the standard approach. An application to an exchange rate dataset highlights relevant differences in the results of tests of predictive accuracy based on the standard approach versus the framework proposed in this paper. (C) 2015 International Institute of Forecasters. Published by Elsevier B.V. All rights reserved.
Keyword:
Forecast evaluation
Forecast comparison
Recursive model estimation
Mean squared error
Forecast weighting scheme
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