Fig. 15From: Improved Meta-learning Neural Network for the Prediction of the Historical Reinforced Concrete Bond–Slip Model Using Few Test SpecimensGradient descent of different algorithms. a) Loss function of the MMN algorithm. b Loss function of the MAML algorithm. c Loss function of the Fine-tune algorithm. d Loss function of the DNN (all data set) algorithm. e Loss function of the DNN (target data set) algorithm.Back to article page