Fig. 4.

Prediction score of vaccine induced memory maintenance through a machine learning approach. Panel 1 reports data sources used for model training. Panel 2 shows accuracy metrics (Accuracy in green, ROC AUC in magenta, and F1 score in red) of the classification algorithms tested on a 60/40 (train/test) split, together with the SHAP values expressing the feature importance scores for the optimized selected model. In panel 3 are reported the histogram of predictions and ROC curve of the model on the entire dataset (n = 22). Created with BioRender.com.