I was reading this article and I came across the following sentence:
An emerging artist is usually defined as someone at the early stages of their career. Maybe, as an “emerging” artist, you're honing your style and have landed some recognition from a critic, but you don't have commercial representation yet. ... The word “mid-career” is also up to interpretation.
In my search for the meaning of up to interpretation I also found up for interpretation which in turn led me on a search for the difference between up to and up for but that does not seem to help.
I am still not sure about the difference in meaning between up to interpretation and up for interpretation (if there is any).