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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31
31
2.4 データマイニングプロセス
を得た状態で
2
回目のプロセスを回すことができます。それでは手順の詳細について見てい
きましょう。
2.4.1
ビジネスの理解
最初に、一番重要なことですが、解決するべき問題を理解しましょう。それは当たり前だ
と思うかもしれません。ですが実際のビジネス問題が、明確で曖昧さのないデータマイニン
グの問題としてあらかじめ定義されていることなどありません。ビジネス問題の再検討とそ
の問題に対するソリューションの設計は、何らかの発見を繰り返すプロセスになることが多
いのです。図
2-2
ではデータマイニングのプロセスが直線的な（一度実施したことはもう二
度と実施しない）プロセスではなく、大きなサイクルの中にまたサイクルがあるような反復
を前提としたプロセスとして表現されています。一度ソリューション構築を行っただけでは
完結しなかったり、最適な結果が得られないこともあります。そのため、実際にビジネスに
適用できるレベルのソリューションを構築するには、プロセスを反復することが必要です。
ビジネスを理解する段階においては、経験に頼る部分も多く、分析担当者の想像力が大き
図
2-2
CRISP
データマイニングプロセス
ビジネスの理解 データの理解
データの準備
モデリング
適用
評価
データ
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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.