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
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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.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
章
TensorFrames
151
8
章
TensorFrames
本章は、急成長分野であるディープラーニングの広い視点からの入門であり、なぜディープラーニン
グが重要なのかを紹介します。本章では、ディープラーニングに必要となる特徴学習とニューラルネット
ワークを巡る基礎を紹介します。そしてApache Spark 用の TensorFramesを手早く使い始めてみます。
本章では学ぶことは次のとおりです。
●
ディープラーニングとは何か？
●
特徴学習の初歩
●
特徴エンジニアリングとは何か？
●
TensorFlowとは何か？
●
TensorFrames
●
TensorFrames のクイックスタート
これらの項目からわかるとおり、まずはディープラーニングについて説明していきます。さらに厳密
に言うなら、ニューラルネットワークから始めていきましょう。
8.1
ディープラーニングとは何か
ディープラーニングは、データの学習表現に基づく機械学習の手法です。大まかには、ディープラー
ニングは私たちの頭脳のニューラルネットワークを基盤としています。こうした構造を取る目的は、相
互に緊密に接続された大量の要素（生物学的なシステムなら、これは私たちの頭脳のニューロンにあた
ります）を提供することにあります。私たちの頭脳には、およそ 1,000億のニューロンがあり、それぞれ
のニューロンは他の 10,000 個のニューロンと接続されています。これらの要素は協調して働き、学習プ
ロセスを通じて問題を解決します。そういった問 ...
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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.