I have seen multiple questions and answers about this, but I haven't been able to understand, so, I'm gonna try to ask as simple as possible. I have built several models to forecast future value of a variable. When I test the model (on out of training data) I have received the RMSE obtained by each one.
Example: RMSE: 0.05, Min value of dataset: 1, Max value of dataset: 2
How can I calculate the accuracy of the model? Sorry if the question is duplicated, thanks in advance.