英文标题：
《Backbone of credit relationships in the Japanese credit market》
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作者：
Luca Marotta, Salvatore Miccich\\`e, Yoshi Fujiwara, Hiroshi Iyetomi,
  Hideaki Aoyama, Mauro Gallegati, Rosario N. Mantegna
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最新提交年份：
2015
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英文摘要：
  We detect the backbone of the weighted bipartite network of the Japanese credit market relationships. The backbone is detected by adapting a general method used in the investigation of weighted networks. With this approach we detect a backbone that is statistically validated against a null hypothesis of uniform diversification of loans for banks and firms. Our investigation is done year by year and it covers more than thirty years during the period from 1980 to 2011. We relate some of our findings with economic events that have characterized the Japanese credit market during the last years. The study of the time evolution of the backbone allows us to detect changes occurred in network size, fraction of credit explained, and attributes characterizing the banks and the firms present in the backbone.
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中文摘要：
我们检测了日本信贷市场关系加权二部网络的主干。通过采用加权网络调查中使用的通用方法来检测主干。通过这种方法，我们检测到一个主干，该主干在统计上根据银行和企业贷款统一多样化的无效假设得到验证。我们的调查是逐年进行的，从1980年到2011年，历时30多年。我们将我们的一些发现与过去几年日本信贷市场的经济事件联系起来。通过对主干网时间演化的研究，我们可以检测网络规模、所解释的信贷比例以及主干网中银行和企业的特征发生的变化。
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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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