Parametric and Nonparametric Approaches of Reid Vapor Pressure Prediction for Gasoline Containing Oxygenates: A Comparative Analysis Using Partial Least Squares, Nonlinear, and LOWESS Regression Modelling Strategies with Physical Properties

Figure 2

Error internal validation using RMSECV value comparison of the three used regression methods (PLSR, NLR, and NPR) for two different dataset cases: with outliers and without outliers using leave-one-out (LOO) and -fold cross-validation.