April 2020
Intermediate to advanced
552 pages
6h 13m
Japanese
Content preview from ゼロから作るDeep Learning ❸ ―フレームワーク編
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.
ステップ36高階微分以外の用途
これまで私たちは、DeZeroを使って高階微分を求めてきました。そのために行ったことは、本質的には1つです。それは、逆伝播で行う計算に関しても「つながり」を作るようにしたことです。ここで重要な点は、逆伝播の計算グラフ化こそが、DeZeroの新しい機能だということです。高階微分は、その1つの応用例にすぎません。ここでは、新しくなったDeZeroの高階微分以外の用途について見ていきます。
![[注記]](/api/v2/epubs/urn:orm:book:9784873119069/files/images/note.png) |
|
新しいDeZeroは、逆伝播で行った計算に対して、さらに逆伝播を行うことができます。その機能は、double backpropagationと呼ばれます（以降、double backpropと表記）。double backpropは、現代のディープラーニングのフレームワークのほとんどがサポートしています。 |
36.1 double backpropの用途
それでは、double backpropの高階微分以外の用途を見ていきましょう。まずは、次の問題を考えてみましょう。
問：次の2つの式が与えられたとき、
における（に関するの微分）を求めよ。
|
| (36.1) |
|
| (36.2) |
これは、これまでにも見てきた微分を求める問題です。これまでと異なるのは、式(36.2) ...
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.