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arXiv 1502.00225q-fin.STphysics.data-anq-fin.GN
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金融相关谷歌搜索的幂律相关性及其与波动性和交易量的交叉相关性:来自道琼斯工业指数的证据

Power-law correlations in finance-related Google searches, and their cross-correlations with volatility and traded volume: Evidence from the Dow Jones Industrial components

Ladislav Kristoufek

摘要:

我们研究了道琼斯工业平均指数(DJIA)成分股的谷歌搜索查询的幂律相关特性。检查的每日数据的搜索条款与组合的重新缩放的范围和重新缩放的方差检验与去趋势波动分析,我们发现,搜索实际上是幂律相关的赫斯特指数在0.8和1.1之间。因此,对道琼斯工业平均指数股票的普遍兴趣是强烈持久的。我们进一步重新研究的交叉相关结构的搜索,交易量和波动性的成分股票使用去趋势交叉相关和去趋势移动平均交叉相关系数。与相关Google搜索的普遍幂律相关性结构相反,结果表明在线搜索查询和分析的财务指标之间没有普遍的关系。尽管我们确认了大多数配对的正相关性,但也有几对配对的相关性不显著,甚至是负相关。此外,不同尺度之间的相关性差异很大。

英文摘要:

We study power-law correlations properties of the Google search queries for Dow Jones Industrial Average (DJIA) component stocks. Examining the daily data of the searched terms with a combination of the rescaled range and rescaled variance tests together with the detrended fluctuation analysis, we show that the searches are in fact power-law correlated with Hurst exponents between 0.8 and 1.1. The general interest in the DJIA stocks is thus strongly persistent. We further reinvestigate the cross-correlation structure between the searches, traded volume and volatility of the component stocks using the detrended cross-correlation and detrending moving-average cross-correlation coefficients. Contrary to the universal power-law correlations structure of the related Google searches, the results suggest that there is no universal relationship between the online search queries and the analyzed financial measures. Even though we confirm positive correlation for a majority of pairs, there are several pairs with insignificant or even negative correlations. In addition, the correlations vary quite strongly across scales.

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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