Figure 2.

Feature selection in the malignant potential groups with the LASSO method. This method minimized the sum of squares of residues, with the sum of the absolute values of the selected features coefficients being not more than a tuning parameter (λ). (A) Tuning parameter (λ) selection using LASSO penalized logistic regression with 10-fold cross-validation. The AUC was plotted versus log (λ). (B) LASSO coefficient profiles of the radiomic features. A coefficient profile plot was plotted versus the log (λ). Each colored line represents the coefficient of each feature. Vertical line was drawn at the selected λ, where five features had nonzero coefficients.