math treatment
1. multiple linear regression
- adds variables to a monovariate regression
- possibility of overfitting /math artefact predictions ==
- uses only limited spectral information
- Gives less accurate predictions
2. principal components analysis (/regression)
- Groups spectral data into a few, independent components which are used as the predictors
- Hence uses most of the spectral data
- more accurate
3. multiple partial least squares
- similar to PCA but uses both lab data & spectral data in the prediction
- often most accurate