Fig. 3

Comparison of AUC, AUPRC, accuracy, sensitivity, precision, and F1-score for MAE (Scalo) and Snap-MAE (Scalo) models across different masking ratios on Lead II ECG signal. Each subplot shows a different metric (AUC, AUPRC, sensitivity, precision, and F1-score) with performance trends from 65 to 90% masking ratio, representing the consistent improvement of Snap-MAE over MAE across most settings.