Optimization of Bioactive Ingredient Extraction from Chinese Herbal Medicine Glycyrrhiza glabra: A Comparative Study of Three Optimization Models

Table 7

Effect of the number of hidden neurons of GA-BPNN on the maximum absolute error, the determination coefficient, and the correlation coefficient for the training data and the testing data.

Hidden; neurons
1	24.8167	13.6733	0.6818	0.8260	0.5455
2	12.4153	11.4872	0.8422	0.9186	0.5325
3	6.9400	9.4277	0.9895	0.9952	0.5841
4	7.1209	6.8005	0.9857	0.9929	0.5667
5	4.1890	4.2232	0.9967	0.9984	0.7681
6	2.0200	4.8036	0.9984	0.9992	0.7052
7	3.8732	2.3678	0.9987	0.9979	0.9964
8	3.0094	3.2231	0.9967	0.9984	0.9957
9	6.8777	4.1785	0.9955	0.9979	0.9155

Note. and are the maximum absolute error of the training set and the testing set, respectively. is the determination coefficient of the training set. and are the correlation coefficient for the training data and the testing data, respectively.