n=266 | RBC clot | Fibrin clot | Mixed clot | Blood | Vessel wall | |
Predicted | RBC clot | 13 | 0 | 0 | 3 | 0 |
Fibrin clot | 0 | 32 | 1 | 0 | 9 | |
Mixed clot | 1 | 4 | 16 | 2 | 12 | |
Blood | 0 | 1 | 0 | 109 | 0 | |
Vessel wall | 0 | 3 | 6 | 2 | 52 |
The result of the validation of the decision tree model presented as a confusion matrix based on the validation dataset. The rows represent how the model classified each DRS reading according to clot or tissue type, and the columns represent the actual type of the clot and tissue that was examined. Correctly classified DRS readings are presented in cells with white background. Falsely positive and negative readings can be identified for each clot and tissue type from the rows and columns respectively, and are presented in cells with gray background.
DRS, diffuse reflectance spectroscopy; RBC, red blood cell.