Using time-varying volatility for identification in Vector Autoregressions: An application to endogenous uncertainty
利用时变波动率识别 VAR:内生不确定性应用AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确提出随机波动率结构 VAR,用于识别结构冲击并分析宏观不确定性反馈,支持 VAR 冲击与时间序列方向。
利用时变波动率识别 VAR:内生不确定性应用AI 解读 ↓
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We develop a structural vector autoregression with stochastic volatility in which one of the variables can impact both the mean and the variance of the other variables. We provide conditional posterior distributions for this model, develop an MCMC algorithm for estimation, and show how stochastic volatility can be used to provide useful restrictions for the identification of structural shocks. We then use the model with US data to show that some variables have a significant contemporaneous feedback effect on macroeconomic uncertainty, and overlooking this channel can lead to distortions in the estimated effects of uncertainty on the economy.
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贝叶斯向量自回归与随机波动
Bayesian vector autoregressions (BVARs) are the workhorse in macroeconomic forecasting. Research in the last decade has established the importance of allowing time-varying volatility to capture both secular and cyclical variations in macroeconomic uncertainty. This recognition, together with the growing availability of large datasets, has propelled a surge in recent research in building stochastic volatility models suitable for large BVARs. Some of these new models are also…