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- W2045160912 abstract "Abstract Mapping time series into a visibility graph network, the characteristics of the gold price time series and return temporal series, and the mechanism underlying the gold price fluctuation have been explored from the perspective of complex network theory. The network degree distribution characters, which change from power law to exponent law when the series was shuffled from original sequence, and the average path length characters, which change from L ∼ ln N into ln L ∼ ln N as the sequence was shuffled, demonstrate that price series and return series are both long-rang dependent fractal series. The relations of Hurst exponent to the power-law exponent of degree distribution demonstrate that the logarithmic price series is a fractal Brownian series and the logarithmic return series is a fractal Gaussian series. Power-law exponents of degree distribution in a time window changing with window moving demonstrates that a logarithmic gold price series is a multifractal series. The Power-law average clustering coefficient demonstrates that the gold price visibility graph is a hierarchy network. The hierarchy character, in light of the correspondence of graph to price fluctuation, means that gold price fluctuation is a hierarchy structure, which appears to be in agreement with Elliot’s experiential Wave Theory on stock price fluctuation, and the local-rule growth theory of a hierarchy network means that the hierarchy structure of gold price fluctuation originates from persistent, short term factors, such as short term speculation." @default.
- W2045160912 created "2016-06-24" @default.
- W2045160912 creator A5018073672 @default.
- W2045160912 date "2013-08-01" @default.
- W2045160912 modified "2023-10-17" @default.
- W2045160912 title "Visibility graph network analysis of gold price time series" @default.
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- W2045160912 doi "https://doi.org/10.1016/j.physa.2013.03.063" @default.
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