Open Access
Table 2
Fisher-score values corresponding to different features.
| Ranking | Feature | Fisher-score value |
|---|---|---|
| 1 | Maximum current change rate | 1.00 |
| 2 | The maximum value of cd2 layer module | 9.95 × 10−1 |
| 3 | The maximum value of cd1 layer module | 9.45 × 10−1 |
| 4 | The maximum value of cd3 layer module | 8.92 × 10−1 |
| 5 | The energy of cd1 layer in 0.002 seconds before the current | 7.89 × 10−1 |
| 6 | The maximum value of cd4 layer module | 5.73 × 10−1 |
| 7 | The energy of cd2 layer in 0.002 seconds before the current | 5.69 × 10−1 |
| 8 | The energy of cd3 layer in 0.002 seconds before the current | 3.62 × 10−1 |
| 9 | The maximum value of cd5 layer module | 2.69 × 10−1 |
| 10 | The energy of ca5 layer in 0.002 seconds before the current | 2.34 × 10−1 |
| 11 | The energy of cd3 layer | 2.25 × 10−1 |
| 12 | The energy of cd4 layer | 1.83 × 10−1 |
| 13 | The zero rest time within 0.002 seconds before the current | 1.65 × 10−1 |
| 14 | The energy of cd4 layer in 0.002 seconds before the current | 1.32 × 10−1 |
| 15 | Cosine similarity | 1.08 × 10−1 |
| 16 | The energy of cd5 layer in 0.002 seconds before the current | 1.05 × 10−1 |
| 17 | Peak-to-peak value | 1.28 × 10−2 |
| 18 | The maximum value of ca5 layer module | 2.80 × 10−3 |
| 19 | Skewness | 2.40 × 10−3 |
| 20 | The proportion of 3rd harmonic | 2.20 × 10−3 |
| 21 | The proportion of fundamental wave | 8.38 × 10−4 |
| 22 | Variance | 6.14 × 10−4 |
| 23 | Proportion of 5th harmonic | 5.88 × 10−4 |
| 24 | Mean value | 3.14 × 10−5 |
| 25 | Kurtosis | 0 |
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