Study of cross-correlation in a self-affine time series of taxi accidents |
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Authors: | GF Zebende PA da SilvaA Machado Filho |
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Institution: | a Computational Modelling Program -SENAI CIMATEC 41650-010 Salvador, Bahia, Brazilb Physics Department - UEFS 44036-900 Feira de Santana, Bahia, Brazil |
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Abstract: | We study in this paper the cross-correlation between self-affine time series of real variables recorded simultaneously in cases of taxi accidents. For this purpose, we apply the DCCA method and show that the cross-correlation can be divided into three distinct groups, if we look for the detrended covariance function, i.e., long-range cross-correlations, short-range cross-correlations and no cross-correlations. Finally, it will be seen that the detrended covariance function is robust, if compared with other methods, in identifying these types of cross-correlations. |
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Keywords: | Time series Cross-correlation DFA DCCA |
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