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Maximum likelihood estimation of factor models on data sets with arbitrary pattern of missing data

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  • Bańbura, Marta
  • Modugno, Michele

Abstract

In this paper we propose a methodology to estimate a dynamic factor model on data sets with an arbitrary pattern of missing data. We modify the Expectation Maximisation (EM) algorithm as proposed for a dynamic factor model by Watson and Engle (1983) to the case with general pattern of missing data. We also extend the model to the case with serially correlated idiosyncratic component. The framework allows to handle efficiently and in an automatic manner sets of indicators characterized by different publication delays, frequencies and sample lengths. This can be relevant e.g. for young economies for which many indicators are compiled only since recently. We also show how to extract a model based news from a statistical data release within our framework and we derive the relationship between the news and the resulting forecast revision. This can be used for interpretation in e.g. nowcasting applications as it allows to determine the sign and size of a news as well as its contribution to the revision, in particular in case of simultaneous data releases. We evaluate the methodology in a Monte Carlo experiment and we apply it to nowcasting and backdating of euro area GDP. JEL Classification: C53, E37

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Bibliographic Info

Paper provided by European Central Bank in its series Working Paper Series with number 1189.

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Date of creation: May 2010
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Handle: RePEc:ecb:ecbwps:20101189

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Related research

Keywords: EM algorithm; Factor models; forecasting; large cross-sections; Missing data;

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