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分类依据与纠错

AI 根据所提供的论文材料归类:摘要针对宏观季节时间序列提出结构周期 VAR,并研究结构识别与冲击响应。

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代码、数据与补充材料

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关注这篇论文的作者
Daniel Dzikowski
Carsten Jentsch

结构周期向量自回归

研究问题
宏观原始数据中的季节性如何进入结构推断,季节调整是否丢失有用信息,以及如何估计具有周期变化的冲击响应?
方法与思路
作者提出结构周期 VAR,允许截距、自回归参数和创新方差周期变化,结合线性约束估计、识别方案及季节自助法。
材料陈述的贡献
摘要称给出两种识别方案、冲击响应框架、渐近理论及季节性检验,并在不同假设下证明相关自助法的一致性。
阅读关注点
核对两种识别方案的经济含义、周期参数的线性约束、冲击发生季节对响应的影响,以及各自助法所需条件。
阅读边界
这是 arXiv 预印本,同行评审与期刊接收未核实。摘要未说明识别限制细节及应用结果,不能判断季节调整的普遍损失。

原文摘要

While seasonality inherent to raw macroeconomic data is commonly removed by seasonal adjustment techniques before it is used for structural inference, this may distort valuable information in the data. As an alternative method to commonly used structural vector autoregressions (SVARs) for seasonally adjusted data, we propose to model potential periodicity in seasonally unadjusted (raw) data directly by structural periodic vector autoregressions (SPVARs). This approach does not only allow for periodically time-varying intercepts, but also for periodic autoregressive parameters and innovations variances. As this larger flexibility leads to an increased number of parameters, we propose linearly constrained estimation techniques. Moreover, based on SPVARs, we provide two novel identification schemes and propose a general framework for impulse response analyses that allows for direct consideration of seasonal patterns. We provide asymptotic theory for SPVAR estimators and impulse responses under flexible linear restrictions and introduce a test for seasonality in impulse responses. For the construction of confidence intervals, we discuss several residual-based (seasonal) bootstrap methods and prove their bootstrap consistency under different assumptions. A real data application shows that useful information about the periodic structure in the data may be lost when relying on common seasonal adjustment methods.

笔记与分组
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