Introduction
Materials and methods
Data acquisition
Pre-processing
Feature extraction
Frequency range (Hz) | Decomposition Coefficient |
---|---|
0–2.7 | A5 |
2.7–5.4 | D5 |
5.4–10.8 | D4 |
10.8–21.7 | D3 |
21.7–43.4 | D2 |
43.4–86.8 | D1 |
Feature No. | Features |
---|---|
1 | Power spectrum of A5 coefficient |
2 | Power spectrum of D5 coefficient |
3 | Power spectrum of D4 coefficient |
4 | Power spectrum of D3 coefficient |
5 | Power spectrum of D2 coefficient |
6 | Spectral entropy |
7 | Approximation entropy |
Feature selection
Classification
Result
The number of selected features | MSE |
---|---|
6, 5, 2 | 1.3936 |
3, 7, 1, 4 | 1.3927 |
2, 7, 5, 1, 3 | 1.3918 |