Model

MLR

Reduced MLR

PCR

PLS

Sparse PLS

CR

Ridge

Lasso

BP Reg

Nb var

24

7

24

24

14

24

24

11

24

Parameter

ncp = 10

ncp = 5

ncp = 3

η = 0.56

ncp = 1

α = 0.1

λopt = 9.322

Fract = 0.2

α = 0.01

RMSE

9.503

9.587

10.521

9.59

9.703

10.11

9.537

9.676

9.535

R²

0.862

0.859

0.831

0.859

0.858

0.872

0.818

0.829

0.834

RMSEPobs

11.84

11.68

13.45

11.74

12.24

11.83

11.73

11.58

11.74

RMSEPprev

15.40

14.49

15.80

13.49

14.92

15.21

14.98

12.74

14.39