Machine Learning and Electrocardiography Signal-Based Minimum Calculation Time Detection for Blood Pressure Detection

Table 1

Representation of features mathematical and code.

Nu	Feature	Equation
1	Kurtosis
2	Skewness
3	IQR
4	CV
5	Geometric mean
6	Harmonic mean
7	Activity-Hjort parameters
8	Mobility-Hjort parameters
9	Complexity-Hjort parameters
10	Maximum
11	Median
12	Mean absolute deviation
13	Minimum
14	Central moments
15	Mean
16	Average curve length
17	Average energy
18	Root mean squared
19	Standard error
20	Standard deviation
21	Shape factor
22	Singular value decomposition
23	25% trimmed mean
24	50% trimmed mean
25	Average Teager energy

The property was computed using MATLAB. IQR: interquartile range; CV: coefficient of variation. : variance of the signal . : variance of the 1st derivative of the signal . : variance of the 2nd derivative of the signal