Open masatakashiwagi opened 2 years ago
For instance, the Top Picks row on the homepage makes recommendations based on a personalized ranking of videos, and the Trending Now row also incorporates recent popularity trends.
Netflixも実践しているように,トップピック(ピックアップ)では,パーソナライズしたものをレコメンドエンジンで提供し,トレンドでは,最近の人気を反映させる(比較的新しいコンテンツを対象にランキングを作るのが良さそう)
Netflixでの開発プロセス:
2段階のオンライン実験プロセスの考案:
Using a repeated measures design to determine preferences
A/BテストとInterleavingの違い
ポジションバイアスの問題
Interleavingの感度を従来のA/Bテストと比較する
We find that interleaving is very sensitive: it requires >100× fewer users than our most sensitive A/B metric to achieve 95% power.
interleavingメトリクスとA/Bメトリクスとの相関関係
Conclusion
This idea was supported by the findings of Carvalho and Goldstone (2014a) who found interleaving to be helpful if exemplars were similar and therefore easily confused, but blocking to be preferable if items were more distinct.
Putting category learning in order: Category structure and temporal arrangement affect the benefit of interleaved over blocked study, Memory & Cognition, 42, 481–495.
Innovating Faster on Personalization Algorithms at Netflix Using Interleaving
Authors:
Link: https://netflixtechblog.com/interleaving-in-online-experiments-at-netflix-a04ee392ec55
Date: Nov 30, 2017
どのようなもの?
議論はあるか?
次に読むべき記事は?
備考