"Abbe" values quantify the degree of smoothness of a time series. Decreases to zero for very smooth time series, tends to unity for purely white noise. Following Tarnopolski et al. Physica A 461 (2016) 662-673.
Examples
x = arima.sim(model=list(ar =0.3), n =10^4)Abbe(x)
References
Tarnopolski et al. (2016), Physica A 461, 662-673.