What is the AUPRO metric?

Hello guys.

Suddenly I’ve been reading some papers which mention the AUPRO metric. I did a quick googling but did’t find anything that answered directly.

So the question is simple, what is the AUPRO? or where I could read the official paper or wherever where AUPRO is described?

Thanks

Hello. No one? :slight_smile:
I am very interesting in knowing more