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We propose a multivariate generalization of the multiplicative volatility model of Engle and Rangel (2008), which has a …
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Cholesky multivariate stochastic volatility model. It establishes that systematically different dynamic restrictions are … divergent when volatility clusters idiosyncratically. It is illustrated that this property is important for empirical … multivariate stochastic volatility model is proposed as a robust alternative. …
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In the analysis of multivariate stochastic volatility models, many estimation procedures begin by transforming the data …
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We propose a semiparametric multivariate estimator and a multivariate score-type testing procedure under a perturbed multivariate fractional process. The estimator is based on the periodogram and uses a local Whittle criterion function which is generalised by an additional constant to capture...
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