《The q-dependent detrended cross-correlation analysis of stock market》
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作者:
Longfeng Zhao, Wei Li, Andrea Fenu, Boris Podobnik, Yougui Wang, H.
Eugene Stanley
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最新提交年份:
2017
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英文摘要:
The properties of q-dependent cross-correlation matrices of stock market have been analyzed by using the random matrix theory and complex network. The correlation structures of the fluctuations at different magnitudes have unique properties. The cross-correlations among small fluctuations are much stronger than those among large fluctuations. The large and small fluctuations are dominated by different groups of stocks. We use complex network representation to study these q-dependent matrices and discover some new identities. By utilizing those q-dependent correlation-based networks, we are able to construct some portfolio by those most independent stocks which consistently perform the best. The optimal multifractal order for portfolio optimization is approximately $q=2$. These results have deepened our understanding about the collective behaviors of the complex financial system.
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中文摘要:
利用随机矩阵理论和复杂网络分析了股票市场q相关互相关矩阵的性质。不同量级涨落的相关结构具有独特的性质。小涨落之间的相互关系比大涨落之间的相互关系强得多。大小波动由不同的股票组控制。我们使用复杂网络表示来研究这些q相关矩阵,并发现一些新的恒等式。通过利用这些基于q相关的网络,我们能够通过那些表现始终最好的最独立的股票构建一些投资组合。投资组合优化的最优多重分形顺序约为$q=2$。这些结果加深了我们对复杂金融系统集体行为的理解。
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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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