Nondestructive Detection of Moisture Content in Palm Oil by Using Portable Vibrational Spectroscopy and Optimal Prediction Algorithms

Table 5

Optimum comparison of model performance for different variable selection techniques.

Method	Selected wavelength (nm)	Rc	RMSEC	Rp	RMSEP
PLS	740–1070	0.943	0.582	0.938	0.474
i-PLS	943–958	0.944	0.614	0.905	0.516
Si-PLS	986–1002, 1003–1019	0.968	0.468	0.956	0.361
GA-PLS	740–1070	0.952	0.553	0.950	0.387
SPA-PLS	768, 778, 816, 932, 953, 1009	0.957	0.558	0.941	0.493