Research Article
TASG: An Augmented Classification Method for Impersonal HAR
Table 3
The types of the features extracted in experiments.
| | Feature | Number | Description |
| | Mean | 1 | Average value in window | | STD | 1 | Standard deviation | | Min, max | 2 | Minimum and maximum in window | | Mode | 1 | The value with the largest frequency | | Range | 1 | Max–min | | Mean crossing rate | 1 | Rate of times signal crossing mean value | | DC | 1 | Direct component | | Spectrum peak position | 5 | First 5 peaks after FFT | | Frequency | 5 | Frequencies corresponding to 5 peaks | | Energy | 1 | Square of norm | | Four shape features | 4 | Mean, STD, skewness, kurtosis | | Four amplitude features | 4 | Mean, STD, skewness, kurtosis |
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