Figure 4.

Importance score for each of the 32 factors in predicting 35 diagnostic electrocardiogram statements. Importance scores of each of the 32 factors in the logistic regression for all 35 diagnostic electrocardiogram statements are shown to relate which dimensions are important for diagnosis. High importance values indicate that a high value for the dimension is diagnostic for that abnormality, and vice versa. The negative (red) and positive (blue) scores can be related to the reconstructions after negative (red) and positive (blue) perturbations in Figure 2. Notably, Factor 10 encodes ventricular frequency (as observed in Figures 2 and 3) and therefore has a high value in sinus tachycardia (red) and a low value in sinus bradycardia (blue). NICD, non-specific intraventricular conduction delay.