Re:Continuing our work to improve recommendations on YouTube
by extrapickles on Friday January 25, 2019 @01:50PM
(#19001069)
It sounds like they are overfitting the recommendations.
They really need to get the users explict preference, rather than trying to infer it from what videos they watch, as that data is tainted by the recommendation engine.
Also they have killed the annotation system that most video creators have used to manually recommend videos to their viewers, which is probably going to cause even more overfitting of recommendations.
Seems like they're trying to profile the user for recommendations too early, or just generally suggesting based on too small of a sample of videos. The blank profile is like a knife balanced on edge, where the slightest push will tip it one way or the other. If they'd just hold off the personalized recommendations entirely until you had 100 or 200 videos, it might be better.