Fig. 9

Correlation coefficients (R) of the targets of Aspen model and the BPNN prediction outputs based on (a) training set, (b) validation set, (c) test set and (d) whole data set.
Correlation coefficients (R) of the targets of Aspen model and the BPNN prediction outputs based on (a) training set, (b) validation set, (c) test set and (d) whole data set.