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Combining forecasts from nested models

  • Todd E. Clark
  • Michael W. McCracken

Motivated by the common finding that linear autoregressive models often forecast better than models that incorporate additional information, this paper presents analytical, Monte Carlo, and empirical evidence on the effectiveness of combining forecasts from nested models. In our analytics, the unrestricted model is true, but a subset of the coefficients are treated as being local-to-zero. This approach captures the practical reality that the predictive content of variables of interest is often low. We derive MSE-minimizing weights for combining the restricted and unrestricted forecasts. Monte Carlo and empirical analyses verify the practical e effectiveness of our combination approach.

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Paper provided by Federal Reserve Bank of St. Louis in its series Working Papers with number 2008-037.

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Date of creation: 2008
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Handle: RePEc:fip:fedlwp:2008-037
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