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Test for long memory processes. A bootstrap approach


  • Pilar Grau-Carles


Many time series in diverse fields have been found to exhibit long memory. This paper analyzes the behavior of some of the most used tests for long memory: the R/S or rescaled R/S, the GPH (Geweke and Porter-Hudak) and the DFA (Detrended Fluctuation Analysis). Some of these tests exhibit size distortions in small-samples. It is well known that the bootstrap procedure may correct this fact. In this paper, size and power for those tests, for finite samples and different distributions such as normal, uniform and log-normal are investigated. In the case of short memory process, such as AR, MA and ARCH and long memory such as ARFIMA, p-values are calculated using the post-blackening, moving block bootstrap. The Monte Carlo studies suggest that the bootstrap critical values perform better. The results are applied to financial return time series.

Suggested Citation

  • Pilar Grau-Carles, 2004. "Test for long memory processes. A bootstrap approach," Computing in Economics and Finance 2004 111, Society for Computational Economics.
  • Handle: RePEc:sce:scecf4:111

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    References listed on IDEAS

    1. Andersson, Michael K. & Gredenhoff, Mikael P., 1997. "Bootstrap Testing for Fractional Integration," SSE/EFI Working Paper Series in Economics and Finance 188, Stockholm School of Economics.
    2. Lo, Andrew W, 1991. "Long-Term Memory in Stock Market Prices," Econometrica, Econometric Society, vol. 59(5), pages 1279-1313, September.
    3. Davidson, Russell & MacKinnon, James G., 1999. "The Size Distortion Of Bootstrap Tests," Econometric Theory, Cambridge University Press, vol. 15(03), pages 361-376, June.
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    More about this item


    Long memory; bootstrap; p-value; size correction; Monte Carlo;

    JEL classification:

    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General
    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes

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