Sky maps illustrating the surface density and expected contamination ratios for each class from the test sample. Panels are arranged as in a confusion matrix, with true classes, y_true, on the vertical axis and predicted classes, y_pred, on the horizontal axis. Diagonal panels display the sky surface density of sources classified into each category – galaxies, QSOs, and stars – uniformly scaled in color. The off-diagonal panels show the relative classification error for given true and predicted classes, calculated as the number of misclassified sources divided by the total number of objects in the true class. A minimum of 4 sources is required in order to compute the classification error. The off-diagonal panels share a distinct color scale from the diagonal ones. No apparent trends are visible based on sky position.