R2 (RSquare) and Generallized R2 for the models with nominal response
Dear colleagues, I have got a doubt which R2 is utilized as a metrics for the JMP's models with nominal response, like Partition or XGBoost (available in JMP Pro16). In particular, R2 is used as a metrics for splits counting, which is a key to control the model's effectiveness. For the models with continious response everything is clear for me, but what's the formula and interpretation of R2 for n...