I've just worked it out, but can I suggest an update to the KB article to make things immediately obvious to users.
I installed, configured, ran the AI Faces plugin.
I could see the server running on TCP8001.
I could see faces being matched - "2 faces recognised in IMG_1234"
I could see "Total faces detected: 773"
I couldn't see where the faces were stored or where I could browse them or how I could give them a name. I looked everywhere I could think of. I asked the internet "where can I see the 'resource view' in ResourceSpace". I clicked on images with faces in them. Nothing looked like the "Detected faces" screengrab in the KB article.
I eventually worked it out just as I was checking something for this post. It was there all along, but because the the "Detected faces" section appears off the bottom of the screen in my install. Because the screengrab only shows the faces and doesn't show the context of it appearing within the view of a specific image I missed it.
All of which is to say - it's a great product, it's very fast, it's free, but little things like this can improve the experience so much.