An efficient Bayesian approach to multiple structural change in multivariate time series
多元时间序列多重结构变化的高效贝叶斯方法AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究多元时间序列和 VAR 的多重结构突变,并将估计与预测作为主要任务。
多元时间序列多重结构变化的高效贝叶斯方法AI 解读 ↓
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Summary This paper provides a feasible approach to estimation and forecasting of multiple structural breaks for vector autoregressions and other multivariate models. Owing to conjugate prior assumptions we obtain a very efficient sampler for the regime allocation variable. A new hierarchical prior is introduced to allow for learning over different structural breaks. The model is extended to independent breaks in regression coefficients and the volatility parameters. Two empirical applications show the improvements the model has over benchmarks. In a macro application with seven variables we empirically demonstrate the benefits from moving from a multivariate structural break model to a set of univariate structural break models to account for heterogeneous break patterns across data series.