Artikel
On diagnostic checking of vector ARMA-GARCH models with Gaussian and Student-t innovations
This paper focuses on the diagnostic checking of vector ARMA (VARMA) models with multivariate GARCH errors. For a fitted VARMA-GARCH model with Gaussian or Student-t innovations, we derive the asymptotic distributions of autocorrelation matrices of the cross-product vector of standardized residuals. This is different from the traditional approach that employs only the squared series of standardized residuals. We then study two portmanteau statistics, called Q1(M) and Q2(M), for model checking. A residual-based bootstrap method is provided and demonstrated as an effective way to approximate the diagnostic checking statistics. Simulations are used to compare the performance of the proposed statistics with other methods available in the literature. In addition, we also investigate the effect of GARCH shocks on checking a fitted VARMA model. Empirical sizes and powers of the proposed statistics are investigated and the results suggest a procedure of using jointly Q1(M) and Q2(M) in diagnostic checking. The bivariate time series of FTSE 100 and DAX index returns is used to illustrate the performance of the proposed portmanteau statistics. The results show that it is important to consider the cross-product series of standardized residuals and GARCH effects in model checking.
- Sprache
-
Englisch
- Erschienen in
-
Journal: Econometrics ; ISSN: 2225-1146 ; Volume: 1 ; Year: 2013 ; Issue: 1 ; Pages: 1-31 ; Basel: MDPI
- Klassifikation
-
Wirtschaft
- Thema
-
vector autoregressive moving-average process
multivariate GARCH model
asymptotic distribution
portmanteau statistic
model checking
heavy tail
multivariate time series
bootstrap
- Ereignis
-
Geistige Schöpfung
- (wer)
-
Wang, Yongning
Tsay, Ruey S.
- Ereignis
-
Veröffentlichung
- (wer)
-
MDPI
- (wo)
-
Basel
- (wann)
-
2013
- DOI
-
doi:10.3390/econometrics1010001
- Handle
- Letzte Aktualisierung
-
10.03.2025, 11:41 MEZ
Datenpartner
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Objekttyp
- Artikel
Beteiligte
- Wang, Yongning
- Tsay, Ruey S.
- MDPI
Entstanden
- 2013
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