Feature selection was consistent across folds, with the same 12 metabolites repeatedly selected in more than 35 cross-validation folds, indicating stable model performance ( Figure 4F )
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Kitakata H, Endo J, Matsushima H, Yamamoto S, Ikura H, Hirai A, Koh S, Ichihara G, Hiraide T, Moriyama H, Shirakawa K
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For final model evaluation, we fixed the number of features and hyperparameters (including regularization parameter C) using the best-performing configuration and trained the model using a random seed