DCCA cross-correlation analysis in time-series with removed parts

被引:11
|
作者
Zebende, G. F. [1 ]
Brito, A. A. [2 ,3 ]
Castro, A. P. [4 ]
机构
[1] State Univ Feira de Santana, Feira De Santana, BA, Brazil
[2] Fed Inst Educ Sci & Technol, Paulo Afonso, BA, Brazil
[3] Senai, Salvador, BA, Brazil
[4] Jorge Amado Univ Ctr, Salvador, BA, Brazil
关键词
DFA; DCCA; Detrended cross-correlation coefficient; Long-range memory time-series; ARFIMA process; CORRELATION-COEFFICIENT; AIR-TEMPERATURE; EXCHANGE; OIL;
D O I
10.1016/j.physa.2019.123472
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this paper we analyze the effect of removing pieces in time-series with long range-memory by DFA method and detrended cross-correlation coefficient. To achieve this purpose, initially simulated time-series are produced by ARFIMA process (long time dependence). From these simulated time-series cuts and removals are produced. The results show that for up to 50% of removed parts, compared to the original time-series, there is no change in the final results for detrended auto and cross-correlations. Therefore, with this paper we show that the DFA method and the detrended cross-correlation coefficient are robust for time-series analysis even for time-series with removed parts. This result ensures that these methods can be applied to real time-series, which in many cases lacks measurement for a variety of reasons and causes. (C) 2019 Elsevier B.V. All rights reserved.
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页数:7
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