Fig. 6From: Machine learning-based prediction model of acute kidney injury in patients with acute respiratory distress syndromeCalibration curves of logistic regression, LightGBM, KNN and XGBoost_HPO model. a Calibration curves in testing set; b Calibration curves in extra validation set. KNN, K-nearest neighbor; XGBoost, eXtreme gradient boosting; LightGBM, light gradients boosting machine; HPO, hyperparameter optimizationBack to article page