Fractionally integrated process with power-law correlations in variables and magnitudes (CROSBI ID 108258)
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Podaci o odgovornosti
Podobnik, Boris ; Ivanov, Plamen Ch. ; Biljakovic, Katica ; Horvatić, Davor ; Stanley, H. Eugene ; Grosse, Ivo
engleski
Fractionally integrated process with power-law correlations in variables and magnitudes
We propose a new stochastic process, de ned by only two parameters, 1 and 2 , which generates power-law correlations or anticorrelations in the variable increments, and power-law correlations in their magnitudes to account for empirical observations in a range of physical systems. To demonstrate the utility of our process, we consider the case with power-law anticorrelations in the variable increments and power-law correlations in their magnitudes to model scaling properties in heartbeat data. The parameters 1 and 2 control separately the correlations in the increments and their magnitudes, and we nd linear relations between each parameter and the corresponding correlation exponent.
stohasic process ; correlation ; heartbeat ; weather data
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Podaci o izdanju
72 (2)
2005.
026121
7
objavljeno
1539-3755
1550-2376
10.1103/PhysRevE.72.026121