“…Many wavelength selection algorithms, such as the successive projection algorithm (SPA) (Araújo and others ), genetic algorithm (GA) (Jarvis and Goodacre ), competitive adaptive reweighted sampling (CARS) (Li and others ), first‐derivative and mean centering iteration algorithm (FMCIA) (Su and Sun ), regression coefficient (RC) (He and others ), and principal components analysis (PCA) (Shahin and Symons ) have been introduced over the last couple of decades. The effective multivariate calibration models, including partial least squares regression (PLSR), principal component regression (PCR), multiple linear regression (MLR), artificial neural networks (ANN), support vector machines (SVM), and least square support vector machine (LS‐SVM), together with selected feature wavelengths for multispectral imaging, can be used for the online and nondestructive monitoring of food quality (Nashat and others ; Shahin and Symons ; Lorente and others ; Pu and others ). In principle, a good multivariate model should have high accuracy values, or determination coefficients in calibration ( R 2 C ), cross‐validation ( R 2 CV ), and prediction ( R 2 P ), and low values of root mean square errors in calibration (RMSEC), cross‐validation (RMSECV), and prediction (RMSEP).…”