2 papers
cond-mat2001
Relation between Magnitude Series Correlations and Multifractal Spectrum Width
Yosef Ashkenazy, Shlomo Havlin, Plamen Ch. Ivanov +3
We study the correlation properties of long-range correlated time series, , with tunable correlation exponent and built-in multifractal properties. For the cases we investigat…
cond-mat.stat-mech2001
Decomposition of Heartbeat Time Series: Scaling Analysis of the Sign Sequence
Y. Ashkenazy, P. Ch. Ivanov, S. Havlin +4
The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. We show that the sign sequence, a simple binary rep…