April 2025
Intermediate
240 pages
6h 56m
Japanese
Content preview from AI開発力を鍛える！機械学習と最適化による問題解決講座
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.
034
0
1
2
3
1
を制御できる関係は、
表 1.1.1 でまとめたように、「因果関係かつ
が制御でき
る」場合でした。つまり最適化は、「因果関係かつ
が制御できる」関数設定にお
いて大きな意味があります。一方、「因果関係かつ
が制御できない」「因果なし
かつ
が制御できない」の場合は、
が制御できませんので、最適化の結果を用い
て
を制御するような直接的な恩恵はありません。しかし、最適化の結果、
が
取りうる最大・最小の値を知ることができます。関数の出力
が取りうる範囲を
知るだけでも様々なことに役立ちますので、制御ができないとしても十分に意味
があります。最後に「因果なしかつ
が制御できる」場合は、
と
は独立でした
ので、
を最大（最小）にする
は一意に決まらず、最適化はできません。
本 項 の まとめ
実際の課題解決において機械学習と最適化の問題に落とし込む作業では、機械
学習と最適化の大枠を理解しておくことが大切です。それぞれ次のようにまとめ
られます。
機械学習：
の
に対する法則を見つける
最適化：目的関数を最小（最大）にする
を見つける
そもそもなぜ機械学習をするのか？
もう少し機械学習と最適化を詳しく眺めて、特に、それぞれの恩恵を考えてみ
ましょう。まずは機械学習からです。機械学習は、データから法則を見つけるこ
とでしたが、パラメータ
が1 次元のスカラーである場合は、
図 1.2.2 のように、
データ全体の傾向を表す曲線を得ることに相当します。どのようにして曲線を得
るかは機械学習の専門書で学ぶとして、今は機械学習によって曲線が得られたと ...
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.