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Radiomics feature selection. (A) Tuning parameter (λ) selection with 10-fold cross validation in the LASSO model via minimum criteria. Optimal feature selection according to AUC value. (B) LASSO coefficient profiles of the 70 radiomic features. Dotted vertical lines defined the optimal values of λ. The optimal λ value of 0.00472 with log (λ) of -5.36 resulting in nine nonzero coefficients were selected.
