Kudos to the recommendation system in new topic screen

I was creating a new topic for one of my ideas regarding recommending topics based on text representations , and when i was about to create a new topic i found that forums site correctly predicted similar topics to the one which i was already creating and much to my amusement my idea had been discussed in forums already.

Found it really cool , i do not know how this feature works it uses ML or not but its great piece of tech. and i would love learn how it works.
can anyone please exaplain :slight_smile: