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Real-time forecasting in a data-rich environment

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  • Liebermann, Joelle

    (Central Bank of Ireland)

Abstract

This paper assesses the ability of di erent models to forecast key real and nominal U.S. monthly macroeconomic variables in a data-rich environment from the perspective of a realtime forecaster, i.e. taking into account the real-time data revisions process and data ow. We nd that for the real variables predictability is con ned over the recent recession/crisis period. This is in line with the ndings of D'Agostino and Giannone (2012) that gains in relative performance of models using large datasets over univariate models are driven by downturn periods which are characterized by higher comovements. Regarding in ation, results are stable across time, but predictability is mainly found at the very short-term horizons. In ation is known to be hard to forecast, but by exploiting timely information one obtains gains at nowcasting and forecasting one-month ahead, especially with Bayesian VARs. Furthermore, for both real and nominal variables, the direct pooling of information using a high dimensional model (dynamic factor model or Bayesian VAR) which takes into account the cross-correlation between the variables and eciently deals with the \ragged edge" structure of the dataset, yields more accurate forecasts than the indirect pooling of bi-variate forecasts/models.

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Bibliographic Info

Paper provided by Central Bank of Ireland in its series Research Technical Papers with number 07/RT/12.

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Date of creation: Dec 2012
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Handle: RePEc:cbi:wpaper:07/rt/12

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Keywords: Real-time data; Nowcasting; Forecasting; Factor model; Bayesian VAR; Forecast pooling;

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