Table 7 The effect of the number of features of different methods on the detection accuracy
From: PCA-Kalman: device-free indoor human behavior detection with commodity Wi-Fi
| Different methods | Impacts of feature number on detection accuracy | ||||
|---|---|---|---|---|---|
| 2 | 3 | 4 | 5 | 6 | |
| PCA-Kalman | 0.948 | 0.958 | 0.961 | 0.971 | 0.966 |
| FIMD | 0.934 | 0.948 | 0.942 | 0.933 | 0.935 |