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arXiv 2102.06456econ.EM
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叙事限制下的认同与推理

Identification and Inference Under Narrative Restrictions

Raffaella Giacomini, Toru Kitagawa, Matthew Read

摘要:

我们认为结构向量自回归服从“叙述限制”,这是不平等的限制功能的结构性冲击在特定时期。这些限制提出了新的问题有关的识别和推理,目前没有频率论的程序进行推理,在这些模型。我们提出了一个解决方案,是有效的从贝叶斯和频率的角度来看:1)形式化的识别问题下的叙述限制; 2)纠正现有的功能,(单一先验)贝叶斯方法,可能会扭曲推断;(3)提出一个强有力的(多重先验)贝叶斯方法,用于评估和消除这些模型中由于可能性具有平坦性而产生的后验敏感性区域;(4)证明了稳健贝叶斯方法具有渐近频率论的有效性。我们通过估计美国货币政策在各种叙述限制下的效果来说明我们的方法。

英文摘要:

We consider structural vector autoregressions subject to 'narrative restrictions', which are inequality restrictions on functions of the structural shocks in specific periods. These restrictions raise novel problems related to identification and inference, and there is currently no frequentist procedure for conducting inference in these models. We propose a solution that is valid from both Bayesian and frequentist perspectives by: 1) formalizing the identification problem under narrative restrictions; 2) correcting a feature of the existing (single-prior) Bayesian approach that can distort inference; 3) proposing a robust (multiple-prior) Bayesian approach that is useful for assessing and eliminating the posterior sensitivity that arises in these models due to the likelihood having flat regions; and 4) showing that the robust Bayesian approach has asymptotic frequentist validity. We illustrate our methods by estimating the effects of US monetary policy under a variety of narrative restrictions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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