Fig. 1From: Machine learning approaches to predict the 1-year-after-initial-AMI survival of elderly patientsSchematic of model development for survival prediction. We optimized feature and hyper-parameter selection in the inner CV loop, while we evaluated the model performance with the optimal feature subsets and hyper-parameters in the outer CV loop. Both inner and outer layers consist of ten repeated folds (training/testing repetitions)Back to article page