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Combining forecasts from successive data vintages: An application to U.S. growth

Thomas Götz, Alain Hecq () and Jean-Pierre Urbain

International Journal of Forecasting, 2016, vol. 32, issue 1, 61-74

Abstract: We extend the repeated observations forecasting analysis of Stark and Croushore (2002) to allow for regressors that may be of higher sampling frequencies than the regressand. For the U.S. GNP quarterly growth rate, we compare the forecasting performances of an autoregressive model with those of several mixed-frequency models, including the MIDAS approach. Using the additional dimension provided by different vintages, we compute several forecasts for a given calendar date with each model, then approximate the corresponding distribution of forecasts by a continuous density. Next, we combine these model-specific densities using scoring rules and analyze both the composition and the evolution of the implied weights over time. In so doing, not only do we investigate the sensitivity of model selection to the choice of which data release to consider, we also illustrate how revision process information can be incorporated into real time studies. As a consequence of these analyses, we introduce a new weighting scheme that summarizes the information contained in the revision process of the variables under consideration.

Keywords: Real-time data; MIDAS; Repeated observations forecasting; Scoring rule (search for similar items in EconPapers)
Date: 2016
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