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Lag Length Estimation in Large Dimensional Systems

  • Jesus Gonzalo

    (Universidad Carlos III de Madrid)

  • Jean-Yves Pitarakis

    (The University of Reading)

We study the impact of the system dimension on commonly used model selection criteria (AIC,BIC, HQ) and LR based general to specific testing strategies for lag length estimation in VAR's. We show that AIC's well known overparameterization feature becomes quickly irrelevant as we move away from univariate models, with the criterion leading to consistent estimates under sufficiently large system dimensions. Unless the sample size is unrealistically small, all model selection criteria will tend to point towards low orders as the system dimension increases, with the AIC remaining by far the best performing criterion. This latter point is also illustrated via the use of an analytical power function for model selection criteria. The comparison between the model selection and general to specific testing strategy is discussed within the context of a new penalty term leading to the same choice of lag length under both approaches.

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File URL: http://econwpa.repec.org/eps/em/papers/0108/0108003.pdf
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Paper provided by EconWPA in its series Econometrics with number 0108003.

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Length: 26 pages
Date of creation: 31 Aug 2001
Date of revision:
Handle: RePEc:wpa:wuwpem:0108003
Note: Type of Document - Adobe pdf; prepared on IBM PC - ; pages: 26
Contact details of provider: Web page: http://econwpa.repec.org

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  1. Engle, Robert & Granger, Clive, 2015. "Co-integration and error correction: Representation, estimation, and testing," Applied Econometrics, Publishing House "SINERGIA PRESS", vol. 39(3), pages 106-135.
  2. GONZALO, Jesus & PITARAKIS, Jean-Yves, 1994. "Comovements in Large Systems," CORE Discussion Papers 1994065, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  3. Gonzalo, Jesus & Pitarakis, Jean-Yves, 1998. "Specification via model selection in vector error correction models," Economics Letters, Elsevier, vol. 60(3), pages 321-328, September.
  4. Cheung, Yin-Wong & Lai, Kon S, 1993. "Finite-Sample Sizes of Johansen's Likelihood Ration Tests for Conintegration," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 55(3), pages 313-28, August.
  5. Ho, Mun S & Sorensen, Bent E, 1996. "Finding Cointegration Rank in High Dimensional Systems Using the Johansen Test: An Illustration Using Data Based Monte Carlo Simulations," The Review of Economics and Statistics, MIT Press, vol. 78(4), pages 726-32, November.
  6. Lewis, Richard & Reinsel, Gregory C., 1985. "Prediction of multivariate time series by autoregressive model fitting," Journal of Multivariate Analysis, Elsevier, vol. 16(3), pages 393-411, June.
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