对国际贸易的影响
COVID-19 impact on the international trade
摘要：
使用联合国Comtrade数据库，我们对2018-2020年多产品世界贸易网络（WTN）进行了谷歌矩阵分析，其中包括COVID-19作为全球大流行病的出现。所应用的算法-PageRank、CheiRank和简化的Google矩阵-考虑到WTN链接的多样性，与通常的进出口分析相比，提供了关于国际贸易的新见解。这些算法建立了新的排名和国家和产品的贸易差额，在平等的基础上考虑每个国家，独立于他们的财富，并根据他们的相对交换量考虑每个产品。与2019冠状病毒病前期间相比，二零二零年该等指标发生重大变化，突显2019冠状病毒病疫情危机引发的国际贸易流量重大重组。我们定义了一个新的PageRank-CheiRank产品贸易差额，无论是出口还是进口导向，这是受大流行的严重干扰。
英文摘要：
Using the United Nations Comtrade database, we perform the Google matrix analysis of the multiproduct World Trade Network (WTN) for the years 2018-2020 comprising the emergence of the COVID-19 as a global pandemic. The applied algorithms -- the PageRank, the CheiRank and the reduced Google matrix -- take into account the multiplicity of the WTN links providing new insights on the international trade comparing to the usual import-export analysis. These algorithms establish new rankings and trade balances of countries and products considering every countries on equal grounds, independently of their wealth, and every products on the basis of their relative exchanged volumes. In comparison with the pre-COVID-19 period, significant changes in these metrics occur for the year 2020 highlighting a major rewiring of the international trade flows induced by the COVID-19 pandemic crisis. We define a new PageRank-CheiRank product trade balance, either export or import oriented, which is significantly perturbed by the pandemic.
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。
