Table 5.
Confusion matrix in percentage for grading ({1} versus {2} versus {3} versus {4}).
| % | SVM (Gini) | RF (Gini) | Grader B | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nb img | 279 | 279 | 176 | |||||||||
| Grader A | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 |
|
| ||||||||||||
| 1 | 20.1 | 6.8 | 1.1 | 0.4 | 19.7 | 6.5 | 1.4 | 0.7 | 31.2 | 9.5 | 0.6 | 0.0 |
| 2 | 6.5 | 15.8 | 4.7 | 1.4 | 7.2 | 16.5 | 2.9 | 1.8 | 4.5 | 19.3 | 6.2 | 0.6 |
| 3 | 1.4 | 4.7 | 13.3 | 3.9 | 2.2 | 5.7 | 13.3 | 2.1 | 0.0 | 3.4 | 7.4 | 2.8 |
| 4 | 0.7 | 0.7 | 5.0 | 13.6 | 0.7 | 2.2 | 5.0 | 12.2 | 0.0 | 1.1 | 1.1 | 13.1 |
|
| ||||||||||||
| Accuracy | 62.7 | 61.6 | 71.5 | |||||||||
|
| ||||||||||||
| Weighted K (95% CI) | 63.7 (57.3–70.2) | 59.4 (52.3–66.5) | 73.6 (66.1–80.2) | |||||||||
| Substantial | Moderate | Substantial | ||||||||||