Fig. 2: The predictive value versus the experimental value of the joint objective (MPa).

a–c without using TCGPR, (a) RF model, (b) XGB model, (c) GPR model, (d) with using TCGPR, three GPR models.
a–c without using TCGPR, (a) RF model, (b) XGB model, (c) GPR model, (d) with using TCGPR, three GPR models.