Fig. 7From: A method of two-dimensional correlation spectroscopy combined with residual neural network for comparison and differentiation of medicinal plants raw materials superior to traditional machine learning: a case study on Eucommia ulmoides leavesThe accuracy curves and cross-entropy cost function of synchronous, asynchronous, integrated 2DCOS spectra model for different drying methods (A, B, C) and regions (D, E, F)Back to article page