Does the Lightroom facial recognition learn?

I've got a huge catalog of digitized photos and I'm trying to use facial recognition to tag them.

Unfortunately the program does only a so so job.  I'm wondering if as i confirm or deny Lightroom guesses as to the identity the person does the facial recognition get better, i.e. after say labeling 100 photos "George Smith" will Lightroom do a better job at identifying the other 650 photos automatically?  If so do I have to do anything to get the program to retry unidentified faces?

If not is there a third party product that is better for facial recognition?  I don't relish spending ages IDing photos one by one.

Thanks for any help!