July 2014
Beginner to intermediate
456 pages
11h 26m
Japanese
Content preview from 戦略的データサイエンス入門 ―ビジネスに活かすコンセプトとテクニック
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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.
76
3 章 予測モデリング：相関から教師ありセグメンテーションへ
に分けることができます。この分割はどれほど有効なものだと言えるでしょうか？新しくで
きた
2
つのサブグループは、それぞれ目的変数について
1
つだけ値を持つことになります。
頭の形が正方形の
4
人は
No
であり、頭の形が丸の
2
人は
Yes
です。こうしてできたサブグ
ループは完全に純粋であり、これ以上分割する必要はありません。
ここで、まだ図
3-11
左側の体の形が長方形のグループについては何もしていません。こ
れらについてはどのように分割すべきか考えてみましょう。このグループには目的変数が
図
3-14
図
3-11
から図
3-13
で行った分割によって得られた分類木
体の形
長方形 楕円
体の色 頭の形
クラス：Yes ク ラ ス：N o
ク ラ ス：N o
クラス：Yes
白 黒 正方形 丸
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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.