Table 2.

Summary of the regularisation methods for autocorrelation function of time series X.

Method	Cut off lag	Window Type	Reference
Truncation	$M=N/4$ & $M=N/5$	N/A	Anderson (1983) & Pyper and Peterman (1998)
Adaptive Truncation	$H_0:{\rho }_{XX,k}=0$	N/A	N/A
Tapering	$M=\sqrt{T}$ & $M=2\sqrt{T}$	Parzen & Single Tukey	Chatfield (2016) & Woolrich et al. (2001)