Table 2.

Validation results obtained when selecting a random validation set consisting of 30% of the NCSAS data. The table shows the validation MSE obtained for methods 1, 2 and 3, and the change in validation MSE between method 1 and method 3, as well as between method 2 and method 3.

	Method 1 (simple kriging I)	Method 2 (simple kriging II)	Method 3 (BME)
MSE	9.89×10−3	9.70×1−3	7.67×10−3
${\text{r}}_{\text{MSE}}^{1,3}$		−22.51%
${\text{r}}_{\text{MSE}}^{2,3}$		−20.96%