Confusion matrices for the overall dataset (left) and only the observational data (right) in the validation set. The matrices were generated based on predicted classes and bounding boxes using the EfficientDet D1 model and by setting an IoU and confidence threshold of 0.5. We consider that 0.1% and 0.6% of the minimum patterns are misclassified as pulsation for the overall (left) and observational data (right), respectively. The letters P and M denote pulsation and minimum patterns.