Skip to main content
. 2026 Jun 11;13:1830474. doi: 10.3389/fmed.2026.1830474

Figure 4.

Panel A presents a horizontal bar chart ranking ten features by mean SHAP value, with TRVmax and FE showing the highest importance. Panel B shows a SHAP summary dot plot for the same ten features, illustrating the impact and distribution of feature values, colored from low (purple) to high (yellow) feature value on the SHAP value scale.

SHAP-based interpretation of the final model. (A) Global feature importance ranked by the mean absolute SHAP value. (B) SHAP summary (beeswarm) plot showing the distribution of SHAP values for each feature across individuals; point color denotes the corresponding feature value (low to high), where positive SHAP values increase and negative values decrease the predicted risk. Variables: TRVmax, maximum tricuspid regurgitation velocity; FE, frequent exacerbation history (≥2 hospitalizations due to acute exacerbations within the past year); NIV, non-invasive ventilation; Monocyte, monocyte count; APTT, activated partial thromboplastin time; ALB, serum albumin; EF, left ventricular ejection fraction; Lymphocyte, lymphocyte count; MPV, mean platelet volume.