Table 1. Classifier performance and evaluation.
The table illustrates the confusion matrices generated for the three evaluation sets using three distinct thresholds for physical contact (4 cm, 5 cm, and 6 cm). It also presents corresponding metrics for Accuracy, Precision, Recall, Specificity, and F1 score for each of these distance thresholds. See also Figure 2, Figure S1, Video S1 and Video S2.
| 4 cm | |||
| Actual (True) values | |||
| Positive | Negative | ||
| Predictive values | Positive | 984 | 9 |
| Negative | 108 | 887 | |
| 5 cm | |||
| Actual (True) values | |||
| Positive | Negative | ||
| Predictive values | Positive | 967 | 9 |
| Negative | 8 | 1053 | |
| 6 cm | |||
| Actual (True) values | |||
| Positive | Negative | ||
| Predictive values | Positive | 934 | 31 |
| Negative | 1 | 1054 | |
| 4 cm | 5 cm | 6 cm | |
| Accuracy | 0.9411 | 0.9917 | 0.9842 |
| Precision | 0.9909 | 0.9908 | 0.9679 |
| Recall | 0.9011 | 0.9918 | 0.9989 |
| Specificity | 0.9900 | 0.9915 | 0.9714 |
| F1 score | 0.9439 | 0.9913 | 0.9832 |