A class of nonlinear ARCH processes is introduced and studied. The existence of a strictly stationary and β-mixing solution is established under a mild assumption on the density of the underlying independent process. We give sufficient conditions for the existence of moments. The analysis relies on Markov chain theory. The model generalizes some important features of standard ARCH models and is amenable to further analysis.
Primary Subjects: 60G10, 60J05
Secondary Subjects: 62M10, 91B84
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References
Basrak, B., Davis, R. A. and Mikosch, T. (2002). Regular variation of GARCH processes. Stochastic Process. Appl. 99 95--115.
Bollerslev, T. (1986). Generalized autoregressive conditional heteroskedasticity. J. Econometrics 31 307--327.
Bougerol, P. and Picard, N. (1992). Strict stationarity of generalized autoregressive processes. Ann. Probab. 20 1714--1730.
Bougerol, P. and Picard, N. (1992). Stationarity of GARCH processes and of some nonnegative time series. J. Econometrics 52 115--127.
Carrasco, M. and Chen, X. (2002). Mixing and moment properties of various GARCH and stochastic volatility models. Econometric Theory 18 17--39.
Cline, D. B. H. and Pu, H. H. (1998). Verifying irreducibility and continuity of a nonlinear time series. Statist. Probab. Lett. 40 139--148.
Cline, D. B. H. and Pu, H. H. (2004). Stability and the Lyapounov exponent of threshold AR--ARCH models. Ann. Appl. Probab. 14 1920--1949.
Davydov, Y. (1973). Mixing conditions for Markov chains. Theory Probab. Appl. 18 313--328.
Engle, R. F. (1982). Autoregressive conditional heteroskedasticity with estimates of the variance of the United Kingdom inflation. Econometrica 50 987--1007.
Francq, C. and Zakoïan, J.-M. (2006). Mixing properties of a general class of GARCH(1, 1) models without moment assumptions on the observed process. Econometric Theory 22 815--834.
Hwang, S. Y. and Kim, T. Y. (2004). Power transformation and threshold modeling for ARCH innovations with applications to tests for ARCH structure. Stochastic Process. Appl. 110 295--314.
Ling, S. and McAleer, M. (2002). Stationarity and the existence of moments of a family of GARCH processes. J. Econometrics 106 109--117.
Meyn, S. P. and Tweedie, R. L. (1996). Markov Chains and Stochastic Stability, 3rd ed. Springer, London.
Nelson, D. B. (1990). Stationarity and persistence in the GARCH(1, 1) model. Econometric Theory 6 318--334.
Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica 59 347--370.
Petruccelli, J. D. and Woolford, S. W. (1984). A threshold AR(1) model. J. Appl. Probab. 21 270--286.
Saïdi, Y. (2003). Etude probabiliste et statistique de modèles conditionnellement hétéroscédastiques non linéaires. Unpublished thesis, Lille 3 Univ. Available at http://www.univ-lille3.fr/theses/saidi-youssef.pdf.
Tjøstheim, D. (1990). Non-linear time series and Markov chains. Adv. in Appl. Probab. 22 587--611.
Tong, H. and Lim, K. S. (1980). Threshold autoregression, limit cycles and cyclical data. J. Roy. Statist. Soc. Ser. B 42 245--292.
Zakoïan, J.-M. (1994). Threshold heteroskedastic models. J. Econom. Dynam. Control 18 931--955.