A DFA approach for assessing asymmetric correlations
A DFA approach for assessing asymmetric correlations
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DOI:
10.1016/j.physa.2009.03.007
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发表时间:
2009-06-15
影响因子:
3.3
通讯作者:
Echeverria, Juan Carlos
中科院分区:
文献类型:
--
作者:
Alvarez-Ramirez, Jose;Rodriguez, Eduardo;Echeverria, Juan Carlos
Here we propose a method, based on detrended fluctuation analysis, to investigate asymmetric correlations in nonstationary time series. The aim is to show that, for a certain range of time scales, different scaling properties are found if signal trending is either positive and negative. We illustrate the method by selected examples from physics and finance. (C) 2009 Elsevier B.V. All rights reserved.