Table 2.
Decomposition accuracy.
| SNR (dB) | MVC (%) | Average number of identified clusters | RoA | Sensitivity | Precision | Number of Identified MUs | SIR (%) | The Average Number of Iterations | Running time (sec) With the Kalman filter | Running time (sec) Without the Kalman filter | RoA (gCKC) | Sensitivity (gCKC) | Precision (gCKC) | Number of Identified MUs (gCKC) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 10 | 30 | 0.75 ± 0.17 | 0.80 ± 0.14 | 0.92 ± 0.09 | 11.60 ± 1.67 | 13.38 ± 3.76 | 51.2 ± 3.3 | 1739 ± 23 [704 ± 11] | 1817 ± 7 [791 ± 5] | 0.89 ± 0.12 | 0.95 ± 0.04 | 0.93 ± 0.09 | 9.6 ± 1.5 |
| 10 | 30 | 28 | 0.76 ± 0.15 | 0.80 ± 0.13 | 0.93 ± 0.08 | 9.62 ± 1.81 | 14.04 ± 5.06 | 52.1 ± 2.1 | 1778 ± 20 [738 ± 6] | 1862 ± 13 [811 ± 1] | 0.89 ± 0.08 | 0.94 ± 0.04 | 0.93 ± 0.05 | 7.6 ± 2.7 |
| 10 | 50 | 16 | 0.77 ± 0.16 | 0.81 ± 0.13 | 0.94 ± 0.08 | 11.00 ± 2.54 | 12.28 ± 5.49 | 49.3 ± 2.5 | 1846 ± 60 [740 ± 13] | 1919 ± 22 [830 ± 10] | 0.87 ± 0.09 | 0.93 ± 0.05 | 0.92 ± 0.06 | 7.3 ± 1.5 |
| 20 | 10 | 27 | 0.89 ± 0.01 | 0.92 ± 0.02 | 0.96 ± 0.01 | 17.20 ± 2.62 | 15.05 ± 1.95 | 53.1 ± 3.7 | 1390 ± 14 [613 ± 2] | 1647 ± 11 [680 ± 1] | 0.94 ± 0.05 | 0.97 ± 0.02 | 0.96 ± 0.03 | 14.00 ± 1.87 |
| 20 | 30 | 28 | 0.88 ± 0.01 | 0.92 ± 0.01 | 0.95 ± 0.01 | 16.51 ± 2.20 | 15.11 ± 1.10 | 53.4 ± 3.3 | 1423 ± 15 [661 ± 23] | 1687 ± 6 [704 ± 10] | 0.91 ± 0.09 | 0.95 ± 0.03 | 0.95 ± 0.05 | 11.40 ± 3.58 |
| 20 | 50 | 20 | 0.88 ± 0.01 | 0.92 ± 0.01 | 0.95 ± 0.02 | 17.01 ± 2.71 | 15.42 ± 2.37 | 56.1 ± 2.5 | 1519 ± 11 [679 ± 18] | 1721 ± 12 [718 ± 8] | 0.90 ± 0.08 | 0.95 ± 0.04 | 0.94 ± 0.05 | 8.20 ± 1.92 |
| 30 | 10 | 28 | 0.90 ± 0.09 | 0.92 ± 0.07 | 0.98 ± 0.02 | 22.00 ± 3.01 | 18.12 ± 3.22 | 55.6 ± 1.3 | 1101 ± 29 [545 ± 47] | 1539 ± 36 [670 ± 57] | 0.94 ± 0.06 | 0.96 ± 0.03 | 0.96 ± 0.04 | 19.00 ± 0.71 |
| 30 | 30 | 29 | 0.90 ± 0.01 | 0.92 ± 0.02 | 0.98 ± 0.01 | 23.00 ± 1.10 | 17.39 ± 2.91 | 57.8 ± 2.1 | 1230 ± 28 [640 ± 18] | 1652 ± 40 [703 ± 25] | 0.92 ± 0.07 | 0.96 ± 0.04 | 0.94 ± 0.05 | 17.40 ± 2.51 |
| 30 | 50 | 21 | 0.90 ± 0.01 | 0.92 ± 0.01 | 0.98 ± 0.01 | 19.80 ± 1.00 | 15.01 ± 3.38 | 58.4 ± 2.4 | 1301 ± 28 [660 ± 27] | 1822 ± 16 [718 ± 13] | 0.91 ± 0.07 | 0.95 ± 0.04 | 0.94 ± 0.05 | 14.20 ± 3.11 |
RoA, Rate of agreement; SIR: average signal-to-interference ratio. In gCKC, the number of iterations was fixed to 100. The total number of simulated MUs was 500. The program was run on an Intel Core i7-8700 3.2 GHz CPU with 32 GB of RAM. The reported running time was measured when analyzing 16 s of HDsEMG signals. For clarity reasons, the running time required to analyze 8 s long signals is also provided in squared brackets.