ROC curves for nonrecurrent transients in the ELAsTiCC sample, illustrating the relationship between true-positive and false-positive rate. Area Under the Curve (AUC) scores are given in legend. Most classes, with the possible exception of SNII and SNIbc, show excellent classification scores. The KN score should be interpreted with caution, as only few simulated KNe provide the number of detections required by ParSNIP. Most KN transients only caused one or two detections which passed the LSST alert generation criteria.