October 2014
Intermediate to advanced
288 pages
6h 27m
Japanese
Content preview from 実践 機械学習システム
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.
252
12
章 ビッグデータ
して開発されています。
ある程度時間が経てば計算が完了するので、そうしたら全ノードを停止せます。結果をどこか適切
な場所に保存した後で、次のコマンドを実行します。
starcluster terminate mycluster
上のようにterminate（終了）した場合、実際にファイルシステムと結果を全て破棄することになり
ます。もちろん、このデフォルトの設定を変更することはできます。
starcluster
から配置も破棄も
できないようなファイルシステムへクラスタに書き込ませることは可能です（そのようなファイルシス
テムは通常のインスタン上で、ユーザのために用意されています）。実際、このツール郡はとても柔軟
性があります。しかし、そのような進んだ操作は、本章の内容と全て合致しないでしょう。
starcluster
のドキュメントは、
http://star.mit.edu/cluster/
に用意されています。本
章では、ほんの一部の機能だけしか使わなかったので（デフォルトの設定だけ用いました）、詳細につ
いてはそちらのドキュメントを参照してください。
12.4
まとめ
本章では、jugと呼ばれる小さなPythonフレームワークの使い方を学びました。jugを用いること
で、マルチコアや複数のマシンを利用して計算を行うことができました。jugは一般的な用途に用いる
ことができますが、特にデータ分析を想定して開発が行われています（開発者は本書の著者でもありま
す）。そのため、Python
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.