arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1606.04872physics.soc-phcs.CEq-fin.ST
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金融市场的多元依存结构

The multiplex dependency structure of financial markets

Nicoló Musmeci, Vincenzo Nicosia, Tomaso Aste, Tiziana Di Matteo, Vito Latora

摘要:

在这里,我们提出了一个多路复用网络的方法,同时调查不同类型的依赖在复杂的数据集。特别地,我们考虑由四层组成的多路复用网络,分别对应于一组金融时间序列之间的线性,非线性,尾部和偏相关性。我们使用标准的网络过滤程序在每层上构建稀疏图,然后分析所获得的复用网络的结构特性。从金融数据构建的多元化的时间演变的研究揭示了重要的变化,在本质上多元化的网络属性,这种变化与金融压力的时期。我们观察到,一些功能是独特的多路复用结构,否则将不可见的单层网络对应于每个依赖措施的单独分析。

英文摘要:

We propose here a multiplex network approach to investigate simultaneously different types of dependency in complex data sets. In particular, we consider multiplex networks made of four layers corresponding respectively to linear, non-linear, tail, and partial correlations among a set of financial time series. We construct the sparse graph on each layer using a standard network filtering procedure, and we then analyse the structural properties of the obtained multiplex networks. The study of the time evolution of the multiplex constructed from financial data uncovers important changes in intrinsically multiplex properties of the network, and such changes are associated with periods of financial stress. We observe that some features are unique to the multiplex structure and would not be visible otherwise by the separate analysis of the single-layer networks corresponding to each dependency measure.

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。

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