Table 3.

Description of features extracted from each window of raw acceleration data. 11 features were extracted from each window, giving a total of 26 attributes.

No.	Feature Description
1	Mean value for each axis (x, y, and z)
2	Average Mean over 3 axes
3	Standard Deviation value for each axis (x, y, and z)
4	Average Standard Deviation over 3 axes
5	Skewness value for each axis (x, y, and z)
6	Average Skewness over 3 axes
7	Kurtosis value for each axis (x, y, and z)
8	Average Kurtosis over 3 axes
9	Energy value for each axis (x, y, and z)
10	Average Energy over 3 axes
11	Correlations: x_y, x_z, x_total, y_z, y_total, z_total