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Radiomics feature selection using LASSO logistic regression based on CC view of mammogram in the primary cohort. Selection of the tuning parameter (λ) in the LASSO model via 10-fold cross-validation based on minimum criteria. 12 ALN status-related radiomics features were selected using the method of LASSO logistic regression. ALN, axillary lymph node;CC, craniocaudal;LASSO, least absolute shrinkage and selection operator.
