Birdwatch: Crowd Wisdom and Bridging Algorithms can Inform Understanding and Reduce the Spread of Misinformation

• https://arxiv.org/abs/2210.15723
• Stefan Wojcik, Sophie Hilgard, Nick Judd, Delia Mocanu, Stephen Ragain, M.B. Fallin Hunzaker, Keith Coleman, Jay Baxter

Content moderation, Crowdsourcing, Matrix factorization

The system factorizes the note-rater matrix (helpful vs. unhelpful) to produce embedding of notes and raters.

They found that notes can be roughly grouped into broadly helpful notes, broadly unhelpful notes, and then polarized notes.