November 2017
Intermediate to advanced
328 pages
6h 51m
Japanese
Content preview from 入門 PySpark ―PythonとJupyterで活用するSpark 2エコシステム
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.
8.1
ディープラーニングとは何か
155
の層を持つフィードフォワードネットワークで、これはすでに紹介したものに似ています。こういった
構 造（たとえ 2つの層と1つのニューロンであっても）における出力層のニューロンは、単純な回帰の問
題（線形回帰やロジスティック回帰など）から、きわめて複雑な回帰やクラシフィケーションのタスクを
（多数の隠れ層と大量のニューロンを用いて）解くことができます。広く使われるもう1つのタイプとし
ては、自己組織化マップがあります。これは、初めてこういった構造を提唱したフィンランド人の研究
者である Teuvo Kohonen にちなんでコホーネンネットワークと呼ばれることもあります。この構造は教
師なしでトレーニングできます。これはすなわち、それらがターゲットを必要としないということ（教師
なし学習のパラダイム）です。こういった構造がよく使われるのは、データに潜むパターンを見いだす
ことを目的とするクラスタリングの問題を解く場合です。
ニューラルネットワークの種類についてさらに詳しく知りたい場合には
http://www.ieee.cz/
knihovna/Zhang/Zhang100-ch03.pdf
を参照してください。
ディープラーニングのライブラリには、TensorFlow 以外にも興味深いものがたくさんあります。例と
しては Theano、Torch、Caffe、Microsoft Cognitive Toolkit（CNTK）、 mxnet、DL4J などがあ
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.