Algorithms for Inference in SVARs Identified with Sign and Zero Restrictions
符号与零限制识别的 SVAR 推断算法AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要直接研究符号与零限制下的 SVAR 识别和推断,并以美国货币政策冲击为应用,明确对应 VAR 与局部投影方向。
符号与零限制识别的 SVAR 推断算法AI 解读 ↓
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I develop algorithms to facilitate Bayesian inference in structural vector autoregressions that are set-identified with sign and zero restrictions by showing that the system of restrictions is equivalent to a system of sign restrictions in a lower-dimensional space. Consequently, algorithms applicable under sign restrictions can be extended to allow for zero restrictions. Specifically, I extend algorithms proposed in Amir-Ahmadi and Drautzburg (2021) to check whether the identified set is nonempty and to sample from the identified set without rejection sampling. I compare the new algorithms to alternatives by applying them to variations of the model considered by Arias et al. (2019), who estimate the effects of US monetary policy using sign and zero restrictions on the monetary policy reaction function. The new algorithms are particularly useful when a rich set of sign restrictions substantially truncates the identified set given the zero restrictions.