ABI {GGIR} | R Documentation |
Activity balance index (ABI)
Description
This function estimates the Activity balance index (ABI), which is a transformation of the self-similarity parameter (SSP), also known as scaling exponent or alpha.
Usage
ABI(x)
Arguments
x |
the estimated self-similarity parameter (SSP) |
Details
ABI = exp(-abs(SSP-1)/exp(-2))
Value
The estimated Activity balance index (ABI) is a real number between zero and one.
Author(s)
Ian Meneghel Danilevicz <ian.meneghel-danilevicz@inserm.fr>
References
C.-K. Peng, S.V. Buldyrev, S. Havlin, M. Simons, H.E. Stanley, A.L. Goldberger Phys. Rev. E, 49 (1994), p. 1685 Mesquita, Victor & Filho, Florencio & Rodrigues, Paulo. (2020). Detection of crossover points in detrended fluctuation analysis: An application to EEG signals of patients with epilepsy. Bioinformatics. 10.1093/bioinformatics/btaa955.
Examples
# Estimate Activity balance index of a very known time series
# available on R base: the sunspot.year.
## Not run:
ssp = SSP(sunspot.year)
abi = ABI(ssp)
## End(Not run)
[Package GGIR version 3.2-6 Index]