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| Title: | | A note on the geometric ergodicity of a nonlinear AR-ARCH model  |
| Authors: | | Meitz, Mika Saikkonen, Pentti |
| Issue Date: | | 2010 |
| Series/Report no.: | | TÜSİAD-Koç University Economic Research Forum working paper series 1003 [rev.] |
| Abstract: | | This note studies the geometric ergodicity of nonlinear autoregressive models with conditionally heteroskedastic errors. A nonlinear autoregression of order p (AR(p)) with the conditional variance specified as the conventional linear autoregressive conditional heteroskedasticity model of order q (ARCH(q)) is considered. Conditions under which the Markov chain representation of this nonlinear AR-ARCH model is geometrically ergodic and has moments of known order are provided. The obtained results complement those of Liebscher [Journal of Time Series Analysis, 26 (2005), 669-689] by showing how his approach based on the concept of the joint spectral radius of a set of matrices can be extended to establish geometric ergodicity in nonlinear autoregressions with conventional ARCH(q) errors. |
| Document Type: | | Working Paper |
| Appears in Collections: | | ERF Working Paper Series, TÜSİAD-Koç University Economic Research Forum (ERF)
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