This command is available with the Predictive Analytics Module. Click here for more information about how to activate the module.
When the absolute deviation loss function determines the number of trees for the optimal model, then Minitab displays the MAD vs Number of Trees plot.
Higher values of R2 indicate a better model. The reference line indicates the optimal R2 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.