Forecasting values >= 0

[eliassz]

Sometimes it requires to forecast values that can be only more or equal zero (for instance, views). What model should I use or what parameters should I add to model to fulfill this condition?

[edwinnglabs]

Sometimes it requires to forecast values that can be only more or equal zero (for instance, views). What model should I use or what parameters should I add to model to fulfill this condition?

Hi @eliassz , in some tutorials, we did use a simple log1p (or log1p-log if you have regressors) transformation. For highly skewed response, you can also consider a box-cox transformation to reverse the normality. Hope this help.

[eliassz]

Thank you for the answer! But can please give me links to such tutorials?