This command is available with the Predictive Analytics Module. Click here for more information about how to activate the module.
When the squared error or loss function method determines the number of trees for the optimal model, then Minitab displays the R2 vs Number of Trees plot.
Lower MAD values indicate a better model. The reference line indicates the optimal MAD value for the test data and the number of trees in the model. If the test curve indicates an insufficient model, consider whether to retry the analysis with alternative settings, such as larger or smaller learning rates, or a larger subsample fraction.