Fig. 5From: Modeling and Optimizing the Composite Prepreg Tape Winding Process Based on Grey Relational Analysis Coupled with BP Neural Network and Bat AlgorithmThe training process and results of backpropagation neural network. a The error curve of GRG in BP network training process. b Error curve of training process. c Normal quantile-quantile plot. d Comparison of measured value and prediction valueBack to article page