What is the Interactive "AI Function Evaluation" operation?

Hello All,  
I realize this conversation string is a bit old, but I'd like to resurrect if possible. I feel like I presently have the same question as the original poster.  Today our Gateway crashed and we restarted, but during review of the capacity metrics report (yes I upgraded it), I see 81.41% of the CUs at 8:10am and many of these operations are showing AI Function Evaluation and attributed to an end user.  This account is a Business user, not a report publisher, which makes it extra curious that it's a background operation and interactive operation.  I really feel that there needs to be a better definition of the "AI Function Evaluation" operation, especially if we are supposed to use this report to make sense of our tenant activity.

Thanks for the attention in advance.

Jessie.