论文标题
企业账户中日本地区银行的货币流网络
Money flow network among firms' accounts in a regional bank of Japan
论文作者
论文摘要
在这项研究中，我们通过在日本地区银行中详尽的所有银行转让的清单来阐明货币流量网络与公司的经济活动如何相关，从而调查了该地区公司在该地区拥有的银行帐户之间的货币流。检查了网络统计和结构，并证明与全国生产网络的统计数据和结构相似。具体而言，Bowtie分析指示了我们所说的具有核心和上游/下游组件的“胡桃木”结构。为了量化单个帐户在网络中的位置，我们使用了Hodge分解方法，发现该帐户的Hodge潜力与其在Bowtie结构中的位置以及其传入和外向的货币和链接的净流有显着的相关性，即单个帐户的净需求/供应。此外，我们使用非负矩阵分解来识别货币全部流动的重要因素。可以解释的是，这些因素与区域经济活动有关。一个因素具有一个特征，汇款来源位于该地区最大的城市，而目的地分散了。其他因素与特定于不同当地地方的经济活动相对应。这项研究是对货币流与公司经济活动之间关系的进一步研究的基础。
In this study, we investigate the flow of money among bank accounts possessed by firms in a region by employing an exhaustive list of all the bank transfers in a regional bank in Japan, to clarify how the network of money flow is related to the economic activities of the firms. The network statistics and structures are examined and shown to be similar to those of a nationwide production network. Specifically, the bowtie analysis indicates what we refer to as a "walnut" structure with core and upstream/downstream components. To quantify the location of an individual account in the network, we used the Hodge decomposition method and found that the Hodge potential of the account has a significant correlation to its position in the bowtie structure as well as to its net flow of incoming and outgoing money and links, namely the net demand/supply of individual accounts. In addition, we used non-negative matrix factorization to identify important factors underlying the entire flow of money; it can be interpreted that these factors are associated with regional economic activities.One factor has a feature whereby the remittance source is localized to the largest city in the region, while the destination is scattered. The other factors correspond to the economic activities specific to different local places.This study serves as a basis for further investigation on the relationship between money flow and economic activities of firms.
