The Properties of Automatic "GETS" Modelling

David Hendry and Hans-Martin Krolzig

Economic Journal, 2005, vol. 115, issue 502, C32-C61

Abstract: After reviewing the simulation performance of general-to-specific automatic regression-model selection, as embodied in "PcGets", we show how model selection can be non-distortionary: approximately unbiased 'selection estimates' are derived, with reported standard errors close to the sampling standard deviations of the estimated DGP parameters, and a near-unbiased goodness-of-fit measure. The handling of theory-based restrictions, non-stationarity and problems posed by collinear data are considered. Finally, we consider how "PcGets" can handle three 'intractable' problems: more variables than observations in regression analysis; perfectly collinear regressors; and modelling simultaneous equations without "a priori" restrictions. Copyright 2005 Royal Economic Society.

Date: 2005
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Related works:
Working Paper: The Properties of Automatic Gets Modelling (2003)
Working Paper: The Properties of Automatic Gets Modelling (2003)
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