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The vector error correction index model: representation, estimation and identification

Author

Listed:
  • Gianluca CubaddaTor Vergata
  • Marco MazzaliTor Vergata

Abstract

SummaryThis paper extends the multivariate index autoregressive model to the case of cointegrated time series of order (1,1). In this new modelling, namely the vector error-correction index model (VECIM), the first differences of series are driven by some linear combinations of the variables, namely the indexes. When the indexes are significantly fewer than the variables, the VECIM achieves a substantial dimension reduction with reference to the vector error correction model. We show that the VECIM allows one to decompose the reduced-form errors into sets of common and uncommon shocks, and that the former can be further decomposed into permanent and transitory shocks. Moreover, we offer a switching algorithm for optimal estimation of the VECIM. Finally, we document the practical value of the proposed approach by both simulations and an empirical application, where we search for the shocks that drive the aggregate fluctuations at different frequency bands in the US.

Suggested Citation

  • Gianluca CubaddaTor Vergata & Marco MazzaliTor Vergata, 2024. "The vector error correction index model: representation, estimation and identification," The Econometrics Journal, Royal Economic Society, vol. 27(1), pages 126-150.
    • Handle: RePEc:oup:emjrnl:v:27:y:2024:i:1:p:126-150.
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    File URL: http://hdl.handle.net/10.1093/ectj/utad023
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