Hilbert-Huang Transform based multifractal analysis of China stock market
Hilbert-Huang Transform based multifractal analysis of China stock market
复制标题
基于希尔伯特-黄变换的中国股市多重分形分析
DOI:
10.1016/j.physa.2014.03.047
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发表时间:
2014-07
期刊:
影响因子:
--
通讯作者:
Huang Yongxiang
中科院分区:
文献类型:
--
作者:
Li Muyi;Huang Yongxiang
In this paper, we employ the Hilbert–Huang Transform to investigate the multifractal character of Chinese stock market based on CSI 300 index. The measured Hilbert moment L q (ω) shows a power-law behavior on the range 0.01< ω< 0.1 min− 1, equivalent to a time scale range 10< τ< 100 min. The measured scaling exponents ζ (q) is convex with q and deviates from the value q/2, implying that the property of self-similarity is broken. Moreover, ζ (q) and the corresponding singularity spectrum D (h) can be described by a lognormal model with a Hurst number H= 0.50 and an intermittency parameter μ= 0.12. Our results suggest that the Chinese stock fluctuation might be captured well by a multifractal random walk model with a proper intermittency parameter.
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