Dear All,

I have a question that I hope you can help me with. I am new to this literature, so this may be a dumb question.

Is it acceptable to study a model in which only some equations are expressed in log-deviations, while others are not?

In my case this would imply that some variables will be expressed in their levels in some equations and in their log-deviations in other equations (all the equations will be linear though).

To my, very limited, experience I have never encountered a paper doing this but, for what I want to do, it seems to me to be the only solution.

In case the answer is yes, it is possible to implement this in Dynare?

Thank you very much.