We develop efficient simulation techniques for Bayesian inference on switching GARCH models. Our contribution to existing literature is manifold. First, we discuss different multi-move sampling techniques for Markov Switching (MS) state space models with particular attention to MSGARCH models. Our multi-move sampling strategy is based on the Forward Filtering Backward Sampling (FFBS) applied to an approximation of MS-GARCH. Another important contribution is the use of multi-point samplers, such as the Multiple-Try Metropolis (MTM) and the Multiple trial Metropolize Independent Sampler, in combination with FFBS for the MS-GARCH process. In this sense we ex- tend to the MS state space models the work of So  on efficient MTM sampler for continuous state space models. Finally, we suggest to further improve the sampler efficiency by introducing the antithetic sampling of Craiu and Meng  and Craiu and Lemieux  within the FFBS. Our simulation experiments on MS-GARCH model show that our multi-point and multimove strategies allow the sampler to gain efficiency when compared with single-move Gibbs sampling.
|Data di pubblicazione:||2012|
|Titolo:||Efficient Gibbs Sampling for Markov Switching GARCH Models|
|Titolo del libro:||Efficient Gibbs Sampling for Markov Switching GARCH Models|
|Appare nelle tipologie:||3.1 Articolo su libro|
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