Table 3.
Confusion matrix (%) for the detection of all events based on time-domain (waves and stances) and frequency-domain (laying activities) features. Rows: true labels; Columns: predicted labels.
| Paddle | S. Paddle | Wave | Sit/Wait | Lay | Dive | Other | No. Annotated Seconds * | |
|---|---|---|---|---|---|---|---|---|
| Paddle | 85.56 | 1.19 | 0.11 | 0.70 | 4.53 | 2.73 | 5.18 | 12,272 |
| S. Paddle | 10.84 | 41.77 | 26.10 | 0.00 | 8.43 | 2.01 | 10.84 | 249 |
| Wave | 0.31 | 0.04 | 90.30 | 0.94 | 0.27 | 0.45 | 7.69 | 2238 |
| Sit/wait | 0.58 | 0.00 | 0.00 | 94.98 | 1.31 | 0.82 | 2.31 | 10,924 |
| Lay | 21.65 | 0.10 | 2.01 | 1.72 | 63.98 | 8.24 | 2.30 | 1044 |
| Dive | 21.68 | 1.73 | 0.87 | 0.29 | 8.67 | 49.71 | 17.05 | 346 |
* Percentage of annotated dataset: 44%.