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Area under curve (AUC) curve of the mortality prediction for the testing dataset at 72 h: (a) no feature extraction, (b) PCA, (c) AE, (d) CNN. Abbreviation: SIRS, systemic inflammatory response syndrome; qSOFA, quick sepsis-related organ failure assessment; RF, random forest; KNN, K nearest neighbor; SVM, support vector machine; PCA, principal component analysis; AE, autoencoder; CNN, convolutional neural network.
