The difference of the smooth curve and original curve
Local fluctuation 2
Local fluctuation with a dynamic step
Smooth factor
The ratio of the whole number to the number of turning points
Symmetrical value
The symmetry of the curve
Fluctuation ratio
Whole fluctuation power
Skewness
The estimation of the degree of statistical data distribution and the direction of skew is the digital characteristics of the asymmetric degree of statistical data distribution
approximate_entropy
Approximate entropy is used to measure the periodicity, unpredictability, and volatility of a time series