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arXiv 0709.2200q-fin.STphysics.data-an
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金融时间序列中股票网络连通结构的统计研究

Statistical Investigation of Connected Structures of Stock Networks in Financial Time Series

Cheoljun Eom, Gabjin Oh, Seunghwan Kim

摘要:

在这项研究中,我们已经调查的决定因素,可以影响连接结构的股票网络。股票网络拓扑性质的代表性指标是与其他股票的链接数。我们使用了金融文献中广泛认可的多因子模型。在多因子模型中,公因子作为自变量,个股收益率作为因变量。我们计算了决定系数,它代表了因变量被自变量解释的程度的测量值。因此,我们在多因子模型中研究了股票网络中的链接数与决定系数之间的关系。我们使用了韩国、日本、加拿大、意大利和英国市场指数上交易的个股。结果如下。我们发现,具有大量链接的股票的平均决定系数比那些与其他股票的链接数量少的股票有更高的值。这些结果表明,共同的因素是显着的确定性因素时,要考虑到股票网络。此外,与其他股票有大量联系的股票可能会更多地受到共同因素的影响。

英文摘要:

In this study, we have investigated factors of determination which can affect the connected structure of a stock network. The representative index for topological properties of a stock network is the number of links with other stocks. We used the multi-factor model, extensively acknowledged in financial literature. In the multi-factor model, common factors act as independent variables while returns of individual stocks act as dependent variables. We calculated the coefficient of determination, which represents the measurement value of the degree in which dependent variables are explained by independent variables. Therefore, we investigated the relationship between the number of links in the stock network and the coefficient of determination in the multi-factor model. We used individual stocks traded on the market indices of Korea, Japan, Canada, Italy and the UK. The results are as follows. We found that the mean coefficient of determination of stocks with a large number of links have higher values than those with a small number of links with other stocks. These results suggest that common factors are significantly deterministic factors to be taken into account when making a stock network. Furthermore, stocks with a large number of links to other stocks can be more affected by common factors.

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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