May 2018
Intermediate to advanced
228 pages
4h 11m
Japanese
Content preview from Rによるテキストマイニング ―tidytextを活用したデータ分析と可視化の基礎
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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.
202
■
9
章 ケーススタディ：
Usenet
テキストの分析
単語をポジティブと誤解する原因として最も大きなものは「
don
’
t want/like/
care
」、そしてネガティブと誤分類する最大の原因は「
no problem
」のようです。
9.4
まとめ
この章の
Usnet
メッセージの分析では、
tf-idf
、トピックモデリング、センチメン
ト分析、
n
グラムトークン化など、本書で説明したほぼすべての整理テキストマイ
ニング手法を駆使しました。章全体、いやケーススタディ全体で、データの探索、
可視化のために私たちが使ってきたのは、ごく少数の共通ツールだけです。これら
の例からは、あらゆる整理テキスト分析にとどまらず、あらゆる整理データ分析の
共通点が見えてくるはずです。
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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.