2019冠状病毒病时期的临近预测经济活动:来自谷歌社区流动性报告的近似值

James Robert Ezequiel Sampi Bravo, Charl Jooste
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引用次数: 36

摘要

本文提出了一个先行指标,即“谷歌流动性指数”,用于预测拉丁美洲和加勒比地区选定经济体的月度工业生产增长率。该指数是通过卡尔曼滤波器使用谷歌COVID-19社区流动性报告数据库构建的。谷歌数据库将从2020年2月15日起向公众开放。本文使用回溯法来增加历史观测次数,然后在2019年1月1日至2020年4月30日期间,用其他高频数据(空气质量)增加流动性数据中的一周滞后。最后,对临近预测的工业生产增长率进行了混合数据抽样回归。谷歌移动指数是工业生产的一个很好的预测指标。结果显示,3月和4月的产出分别大幅下降5%至7%,而4月中旬的产出则出现低谷。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nowcasting Economic Activity in Times of COVID-19: An Approximation from the Google Community Mobility Report
This paper proposes a leading indicator, the"Google Mobility Index,"for nowcasting monthly industrial production growth rates in selected economies in Latin America and the Caribbean. The index is constructed using the Google COVID-19 Community Mobility Report database via a Kalman filter. The Google database is publicly available starting from February 15, 2020. The paper uses a backcasting methodology to increase the historical number of observations and then augments a lag of one week in the mobility data with other high-frequency data (air quality) over January 1, 2019 to April 30, 2020. Finally, mixed data sampling regression is implemented for nowcasting industrial production growth rates. The Google Mobility Index is a good predictor of industrial production. The results suggest a significant decline in output of between 5 and 7 percent for March and April, respectively, while indicating a trough in output in mid-April.
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