Fig. 3From: High accuracy rapid prediction and feasibility of on-site nondestructive estimation of Para rubber quality by spectroscopic methodsRelation between measured and predicted value of a DRC, cross-validation, b TSC, cross-validation, c DRC, test set validation and d TSC, test set validation. r 2 coefficient of determination for cross-validation, RMSECV root mean square error of cross-validation, RPD ratios of performance to deviation. Solid line shows the regression line constructed by PLS regression analysis and dashed line shows target lineBack to article page