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arXiv 0901.4793q-fin.STphysics.soc-ph
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外汇网络的结构和演变

Structure and evolution of the foreign exchange networks

Jaroslaw Kwapien, Sylwia Gworek, Stanislaw Drozdz

摘要:

我们从加权网络的角度研究了外汇市场的拓扑结构和时间演化。基于一组46种货币(包括贵金属)的汇率,我们根据基础货币的选择构建了不同的FX网络表示。我们的研究结果表明,网络结构在时间上是不稳定的,但有主要的集群的货币,这持续了很长一段时间,尽管它们的大小和内容是可变的。我们发现了一个长期的趋势,在网络的演变,影响美元和欧元节点。在所有网络表示中,USD节点逐渐失去其中心性,而相反,EUR节点变得比早期稍微更中心。尽管有这种方向性的趋势,但网络的整体演变是嘈杂的。

英文摘要:

We investigate topology and temporal evolution of the foreign currency exchange market viewed from a weighted network perspective. Based on exchange rates for a set of 46 currencies (including precious metals), we construct different representations of the FX network depending on a choice of the base currency. Our results show that the network structure is not stable in time, but there are main clusters of currencies, which persist for a long period of time despite the fact that their size and content are variable. We find a long-term trend in the network's evolution which affects the USD and EUR nodes. In all the network representations, the USD node gradually loses its centrality, while, on contrary, the EUR node has become slightly more central than it used to be in its early years. Despite this directional trend, the overall evolution of the network is noisy.

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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