SHAP analysis reveals the interconnection heatmaps among joint damages in Mandora. We performed SHAP analysis of the tree-based models in Mandora. For each joint damage, we calculated the absolute SHAP values from all joints. Joints from the finger, wrist, and toe are shown in blue, orange, and green, respectively. The double lines represent joint space narrowing and the single line represents bone erosion. The joints along the row are the target being predicted, whereas joints along the column serve as features to predict. a, The SHAP heatmap represents the contributions from the same side. b, The SHAP heatmap represents the contributions from the other side.