"This is a collaborative launch with IG Growth adds the signal p(time_spent & click), top feed / stories engagement features, and more training data to the UAR (Unified Actor Ranker) value model for push notifications, resulting in +0.067% absolute projected Global DAU, and SS wins to DM Teen MAU, cap15 sessions, and notif CTR."

"Entire Feed Ranking has a great half. Connected Ranking side, we exceeded our global cap-15 session goal and VPV goal. Blending/IFR joint-holdout also exceeds both global and teen cap-15 session goals. This is nearly mission impossible, when we set up goals in early H2. I still" "We launched Connected Feed MB3 model this week, which improved prediction task accuracy and topline metrics, and officially completed our model can't fail milestones in H2. Compared to the beginning of H2, this model update increased our training data by 10X for all production models (100% teens and 60% for genpop), model size by 200X, and incorporated a more comprehensive set of features including cross-surface, teen-specific, and embedding features. Overall, this update improved offline prediction accuracy (~5% penter_comment_surface, ~2% pexternal_share, ~1.2% p_comment, ~0.75% preshare) and drove ecosystem value (+0.33% genpop direct reshares, +0.21% genpop likes, +0.22% teen direct reshares, +0.08% high ME imps). We expect the model to mature in the next 6 weeks and continue to see growing topline impact in the backtest." "Increasing connected feed model training data has shown +0.06% cap15 sessions for both teen and gen pop, validating our hypothesis that increasing model training data drives value for teens and marginal users. At the beginning of H1, we hypothesized that low training data volume limits our ability to deliver model value for Teens. In H2, we took a big bet to significantly increase training data sampling rate on connected feed for both teens (5% -> 100%) and gen pop (5% -> 60%). We have now launched increased training data for 4 out of 5 production models, and are on track to complete the full migration by EOH." "[Notifs / Stories / Feed] (10/30). This is a collaborative launch with IG Growth adds the signal p(time_spent & click), top feed / stories engagement features, and more training data to the UAR (Unified Actor Ranker) value model for push notifications, resulting in +0.067% absolute projected Global DAU, and SS wins to DM Teen MAU, cap15 sessions, and notif CTR."