Multivariate Stochastic Volatility via Wishart Processes: A Comment
基于Wishart过程的多元随机波动率:评论AI 解读 ↓
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基于Wishart过程的多元随机波动率:评论AI 解读 ↓
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This comment refers to an error in the methodology for estimating the parameters of the model developed by Philipov and Glickman for modeling multivariate stochastic volatility via Wishart processes. For estimation they used Bayesian techniques. The derived expressions for the full conditionals of the model parameters as well as the expression for the acceptance ratio of the covariance matrix are erroneous. In this erratum all necessary formulae are given to guarantee an appropriate implementation and application of the model.
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