May 2022
Beginner to intermediate
296 pages
4h 14m
Japanese
Content preview from 推薦システム実践入門 ―仕事で使える導入ガイド
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
付録ANetflix Prize
Netflixは、スマホやPCがあれば、どこでもいつでも、映画やドラマを見放題で楽しむことができます。週末にNetflixを満喫されている方も多いのではないでしょうか。2022年1月時点で、会員数は全世界で2億2000万人を超えています†1。
Netflixをいくつかの数字で見てみると、さらにその凄さに驚かされます。
- 全世界のインターネット通信量（下り）の15％をNetflixが占めており、YouTubeを超える世界一の動画サービス
- 時価総額が20兆円超え
- サブスクリプション収入が月々約1500億円
そんな多くのユーザーを有するNetflixの魅力の1つに、推薦システムがあります。Netflixのホーム画面には、今話題の作品やユーザーにパーソナライズ化されたおすすめの作品が並びます。
図A-1 Netflixのホーム画面の推薦システム（出典：https://www.netflix.com/）
Googleの検索と違って、Netflixではユーザーが作品を探さなくても、ユーザーの視聴履歴などを使ってユーザーが好みそうな作品を教えてくれます。実際に、視聴される作品は、80％が推薦経由で20％が検索経由になっています。
このコラムでは、Netflixの核となる推薦システムについて、Netflixの歴史を振り返りながら、どのように開発されてどのような価値をユーザーに届けてきたのか解説していきたいと思います。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.