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arXiv 1907.05049econ.GNq-fin.EC
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基于主成分分析的全球经济政策不确定性指数

A global economic policy uncertainty index from principal component analysis

Peng-Fei Dai, Xiong Xiong, Wei-Xing Zhou

摘要:

本文通过对全球20个主要经济体经济政策不确定性指数的主成分分析,构建了全球经济政策不确定性指数。研究发现,基于PCA的全球经济政策不确定性指数能够很好地反映全球范围内的经济政策不确定性,这与基于GDP加权的全球经济政策不确定性指数具有很好的一致性。基于PCA的经济政策不确定性指数与全球金融市场的波动性和相关性正相关,表明全球经济政策不确定性越高,股票的波动性和相关性越强。基于PCA的全球经济政策不确定性指数表现略好,因为基于PCA的不确定性与市场波动性和相关性之间的关系更为显著。

英文摘要:

This paper constructs a global economic policy uncertainty index through the principal component analysis of the economic policy uncertainty indices for twenty primary economies around the world. We find that the PCA-based global economic policy uncertainty index is a good proxy for the economic policy uncertainty on a global scale, which is quite consistent with the GDP-weighted global economic policy uncertainty index. The PCA-based economic policy uncertainty index is found to be positively related with the volatility and correlation of the global financial market, which indicates that the stocks are more volatile and correlated when the global economic policy uncertainty is higher. The PCA-based global economic policy uncertainty index performs slightly better because the relationship between the PCA-based uncertainty and market volatility and correlation is more significant.

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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