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TableĀ 2 Summary statistics for external validation of PLSR calibration models for chemical components

From: An NIRS-based assay of chemical composition and biomass digestibility for rapid selection of Jerusalem artichoke clones

Parameter N Full spectra CARS-optimized spectra RF-optimized spectra
RMSEP R 2 V RPD RER RMSEP R 2 V RPD RER RMSEP R 2 V RPD RER
Soluble sugars 13 2.17 0.91 3.07 14.18 2.55 0.85 2.61 12.07 1.57 0.94 4.24 19.60
Cellulose 14 0.75 0.92 3.21 17.49 0.61 0.93 3.95 21.51 0.54 0.94 4.46 24.29
Hemicellulose 14 0.39 0.95 4.18 19.12 0.23 0.98 7.08 32.42 0.35 0.95 4.65 21.31
Lignin 14 0.58 0.89 2.98 12.97 0.66 0.93 2.61 11.40 0.61 0.84 2.83 12.33
Ash 14 0.21 0.58 3.13 16.05 0.31 0.08 2.12 10.87 0.23 0.86 2.86 14.65
  1. N number of samples, CARS competitive adaptive reweighted sampling, RF random frog, RMSEP root mean square error of prediction, R2V coefficient determination of validation, RPD the ratio of performance to deviation, RER the range error ratio