Rolling Bearing Fault Diagnosis Using Modified Neighborhood Preserving Embedding and Maximal Overlap Discrete Wavelet Packet Transform with Sensitive Features Selection

Table 2

Statistical parameters.

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

Here is series of a dataset for ,   is the number of data points, and is the energy distribution of the signal .