Particle Gibbs with ancestor sampling for stochastic volatility models with: heavy tails, in mean effects, leverage, serial dependence and structural breaks

Nonejad Nima ()
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Nonejad Nima: Aarhus University and Creates – Department of Economics and Business, Fuglesangs Alle 4, Aarhus 8210, Aarhus V, Denmark

Studies in Nonlinear Dynamics & Econometrics, 2015, vol. 19, issue 5, 561-584

Abstract: Particle Gibbs with ancestor sampling (PG-AS) is a new tool in the family of sequential Monte Carlo methods. We apply PG-AS to the challenging class of stochastic volatility models with increasing complexity, including leverage and in mean effects. We provide applications that demonstrate the flexibility of PG-AS under these different circumstances and justify applying it in practice. We also combine discrete structural breaks within the stochastic volatility model framework. For instance, we model changing time series characteristics of monthly postwar US core inflation rate using a structural break autoregressive fractionally integrated moving average (ARFIMA) model with stochastic volatility. We allow for structural breaks in the level, long and short-memory parameters with simultaneous breaks in the level, persistence and the conditional volatility of the volatility of inflation.

Keywords: ancestor sampling; Bayes; particle filtering; structural breaks (search for similar items in EconPapers)
JEL-codes: C11 C22 C52 C63 (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1515/snde-2014-0043

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