I have a few questions about the k-fold cross-validation method in JMP for partial least squares regression. I would really appreciate any help you can provide.
Are the results from the folds averaged to give the Press statistic, or is the model with the best validation statistic chosen as the final model? If the latter, would the Press statistic from leave-one-out cross-validation be more representative of the data?
Is the "root mean Press" the same as the RMSEP (sqrt(Press/n))?