Table 4 Dimension reduction of different accumulative contribution rates of five types of ECG
Accumulative contribution | Types | The original feature dimension | feature dimension after PCA | |
|---|---|---|---|---|
Training data | Test data | |||
\(a > 85\%\) | Vpb | 15 | 3 | 3 |
Rbbb | 15 | 4 | 3 | |
Nb | 15 | 3 | 4 | |
Apb | 15 | 4 | 3 | |
Lbbb | 15 | 3 | 4 | |
\(a > 99\%\) | Vpb | 15 | 6 | 6 |
Rbbb | 15 | 7 | 6 | |
Nb | 15 | 6 | 6 | |
Apb | 15 | 7 | 6 | |
Lbbb | 15 | 6 | 7 | |