Rolling Bearing Fault Diagnosis Based on Sensitive Feature Transfer Learning and Local Maximum Margin Criterion under Variable Working Condition

Table 4

Statistical parameters.

Number	Name	Expression
1	Range
2	Mean value
3	Standard deviation
4	Kurtosis
5	Energy
6	Energy entropy

is the series of a dataset for i = 1, 2, …, n, n is the number of data points, and is the energy distribution of the signal .