Netflix Prize
Competition used as the “From Competition to Industry” example of ensembles (s.361-362).
- Leaderboard: Grand Prize RMSE = 0.8567, winning team BellKor’s Pragmatic Chaos (10.06% improvement); “The Ensemble” tied at 0.8567 (s.362).
- The winning solution is a final combination of 107 algorithms; they are not fully implemented (s.362).
- Pitfalls (s.363): exponentially increasing training times and computational requirements; increased infrastructure demand to maintain and update the models.
Related
Concept - No Free Lunch Theorem