Table 1.

Characteristics of the complexity metrics for univariate signals.

Methods	Filtering	Downsampling	Applicability of Refined Composite
MSE [2] and MDE [13]	Moving average	yes	yes
MSEMA and MDEMA	Moving average	no	no
MSEBW [11] and MDEBW	Butterworth	yes	yes
MSEBW [11] and MDEBW without downsampling	Butterworth	no	no
InMSE [15] and InMDE	Cumulative sums of IMFs	no	no