英文标题：
《The gradual evolution of buyer--seller networks and their role in
aggregate fluctuations》
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作者：
Ryohei Hisano, Tsutomu Watanabe, Takayuki Mizuno, Takaaki Ohnishi,
Didier Sornette
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最新提交年份：
2016
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英文摘要：
Buyer--seller relationships among firms can be regarded as a longitudinal network in which the connectivity pattern evolves as each firm receives productivity shocks. Based on a data set describing the evolution of buyer--seller links among 55,608 firms over a decade and structural equation modeling, we find some evidence that interfirm networks evolve reflecting a firm\'s local decisions to mitigate adverse effects from neighbor firms through interfirm linkage, while enjoying positive effects from them. As a result, link renewal tends to have a positive impact on the growth rates of firms. We also investigate the role of networks in aggregate fluctuations.
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中文摘要：
企业之间的买方-卖方关系可以被视为一个纵向网络，在这个网络中，当每个企业受到生产率冲击时，连接模式会发生变化。基于一组描述55608家企业在过去十年中买卖关系演变的数据集和结构方程模型，我们发现一些证据表明，企业间网络的演变反映了一家企业通过企业间联系减轻邻国企业不利影响的局部决策，同时也从中获得了积极影响。因此，链接更新往往会对公司的增长率产生积极影响。我们还研究了网络在总量波动中的作用。
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分类信息：

一级分类：Quantitative Finance 数量金融学
二级分类：General Finance 一般财务
分类描述：Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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一级分类：Physics 物理学
二级分类：Physics and Society 物理学与社会
分类描述：Structure, dynamics and collective behavior of societies and groups (human or otherwise). Quantitative analysis of social networks and other complex networks. Physics and engineering of infrastructure and systems of broad societal impact (e.g., energy grids, transportation networks).
社会和团体（人类或其他）的结构、动态和集体行为。社会网络和其他复杂网络的定量分析。具有广泛社会影响的基础设施和系统（如能源网、运输网络）的物理和工程。
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