英文标题：
《Social dynamics of financial networks》
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作者：
Teruyoshi Kobayashi and Taro Takaguchi
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最新提交年份：
2017
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英文摘要：
  The global financial crisis in 2007-2009 demonstrated that systemic risk can spread all over the world through a complex web of financial linkages, yet we still lack fundamental knowledge about the evolution of the financial web. In particular, interbank credit networks shape the core of the financial system, in which a time-varying interconnected risk emerges from a massive number of temporal transactions between banks. The current lack of understanding of the mechanics of interbank networks makes it difficult to evaluate and control systemic risk. Here, we uncover fundamental dynamics of interbank networks by seeking the patterns of daily transactions between individual banks. We find stable interaction patterns between banks from which distinctive network-scale dynamics emerge. In fact, the dynamical patterns discovered at the local and network scales share common characteristics with social communication patterns of humans. To explain the origin of \"social\" dynamics in interbank networks, we provide a simple model that allows us to generate a sequence of synthetic daily networks characterized by the observed dynamical properties. The discovery of dynamical principles at the daily resolution will enhance our ability to assess systemic risk and could contribute to the real-time management of financial stability.
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中文摘要：
2007-2009年的全球金融危机表明，系统性风险可以通过复杂的金融联系网络传播到全世界，但我们仍然缺乏有关金融网络演变的基本知识。特别是，银行间信贷网络塑造了金融体系的核心，在这一体系中，银行间的大量临时交易会产生随时间变化的互联风险。目前对银行间网络的机制缺乏了解，因此难以评估和控制系统性风险。在这里，我们通过寻找单个银行之间的日常交易模式来揭示银行间网络的基本动态。我们发现银行之间存在稳定的互动模式，由此产生了独特的网络规模动态。事实上，在本地和网络规模上发现的动态模式与人类的社会传播模式具有共同的特征。为了解释银行间网络中“社会”动力学的起源，我们提供了一个简单的模型，该模型允许我们生成一系列以观察到的动力学特性为特征的合成日常网络。在每日处置中发现动力学原理将增强我们评估系统性风险的能力，并有助于实时管理金融稳定。
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分类信息：

一级分类：Quantitative Finance        数量金融学
二级分类：Statistical Finance        统计金融
分类描述：Statistical, econometric and econophysics analyses with applications to financial markets and economic data
统计、计量经济学和经济物理学分析及其在金融市场和经济数据中的应用
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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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