Prediction of hypericin content in Hypericum perforatum L. in different ecological habitat using artificial neural networks

Table 1 The results of parameters tuning in MLP structure

Activation function	Training function	Structure	Test set				Training Data
Activation function	Training function	Structure	R²	MSE	RMSE	MAE	R²	MSE	RMSE	MAE
Logsig-Purelin	LM	13–26-1	0.87	0.15	0.39	0.29	0.99	0.00	0.03	0.02

ISSN: 1746-4811