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. 2021 Aug 14;136:104765. doi: 10.1016/j.compbiomed.2021.104765

Table 2.

Description of obtained features on DWT approximate (A) and detailed (D) coefficients (coef) signals.

Features Description Number of Features
Standard Deviation Standard deviation of D1,D2,D3,D4,D5, A5 coef. 6
Mean Mean of D1,D2,D3,D4,D5, A5 coef. 6
Root Mean Square The square root of D1,D2,D3,D4,D5, A5 coef. 6
Shannon Shannon entropy of D1,D2,D3,D4,D5, A5 coef. 6
Log Energy Log energy entropy of D1,D2,D3,D4,D5, A5 coef. 6
Threshold Threshold entropy of D1,D2,D3,D4,D5, A5 coef. 6
Time Time entropy of D1,D2,D3,D4,D5, A5 coef. 6
Norm Norm entropy of D1,D2,D3,D4,D5, A5 coef. 6
Approximate Approximate entropy of D1,D2,D3,D4,D5, A5 coef. 6
Total Number of Features 54