You can train accurate astronomical classifiers without expensive human labels by combining synthetic data injection with robust handling of noisy labels, and get reliable confidence scores through a hybrid uncertainty approach.
This paper develops a Real-Bogus classification system for astronomical transients that requires no human-labeled training data. It uses simulated transient injections combined with noisy survey data and a dual-network training approach to reliably distinguish real astronomical events from false detections, while also providing calibrated uncertainty estimates.