"R2 you use because your boss only knows this one"
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- MSE you use when you don鈥檛 have outliers
- RMSE you use when you want to interpret the above better
- MAE you use when you have positive/zero/negative values and outliers
- MAPE you use when you only have positive values and emphasize interpretability
- RMSLE you use for positive values with nonnormal distribution
- wMAPE you use when you want MAPE but have large vs small values
- sMAPE you use when you want MAPE but have zero/negative values
- R2 you use because your boss only knows this one