Parameters | Predictive Modeling | Asymmetric Loss Fitting Proportion

Asymmetric Loss Fitting Proportion
Use this option to specify a proportion for asymmetric loss calculations.
The number you enter must be between 0 and 1. The specified value becomes the weight placed on positive residuals (which correspond to under-predictions). Negative residuals (over-predictions) are then weighted as one minus the specified value. For example, if over-predictions are to be weighted three times more than under-predictions, then specify 0.25. The value is analogous to the quantile level in quantile regression.
To Specify the Proportion: