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CONSISTENT ORDER SELECTION FOR ARFIMA PROCESSES
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DOI：10.1214/21-AOS2149.png)
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Estimating the orders of the autoregressive fractionally integrated moving average (ARFIMA) model has been a long-standing problem in time series analysis. This paper tackles this challenge by establishing the consistency of the Bayesian information criterion (BIC) for ARFIMA models with independent errors. Since the memory parameter of the model can be any real number, this consistency result is valid for short memory, long memory and nonstationary time series. This paper further extends the consistency of the BIC to ARFIMA models with conditional heteroscedastic errors, thereby extending its applications to encompass many real-life situations. Finite-sample implications of the theoretical results are illustrated via numerical examples.
Keyword:
ARFIMA models
Bayesian information criterion
conditional heteroscedastic errors
long memory and nonstationary time series
order selection
期刊
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3.7
论文数:
2.8K
被引数:
2.9W
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