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Table 2 Feature list

From: An information-aware visualization for privacy-preserving accelerometer data sharing

Category Feature names for 3 directions Feature description
Time Xaverage,Yaverage, Zaverage The average of each segment
Xvariance, Yvariance, Zvariance The variance of each segment
Xstandarddev,Ystandarddev,
Zstandarddev
The standard deviation of each segment
Xaverageabsdif,Yaverageabsdif,
Zaverageabsdif
The average of the absolute deviations of each segment
Xnanmax, Ynanmax, Znanmax The maximum values of each segment
Xnanmin, Ynanmin, Znanmin The minimum values of each segment
Xmedian, Ymedian, Zmedian The 50th percentile values of each segment
Xperseven, Yperseven, Zperseven The 70th percentile values of each segment
Xpereight, Ypereight, Zpereight The 80th percentile values of each segment
Xpernine, Ypernine, Zpernine The 90th percentile values of each segment
Frequency Xpeakamplitude, Ypeakamplitude,
Zpeakamplitude, Xdomfre,Ydomfre, Zdomfre
The value of the waveform’s peak of each segment after Fourier Transform
Xenergy, Yenergy, Znergy The power of the signal of each segment after Fourier Transform