Skip to Content
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
book

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

by Julia Silge, David Robinson, 大橋 真也, 長尾 高弘
May 2018
Intermediate to advanced
228 pages
4h 11m
Japanese
O'Reilly Japan, Inc.
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
154
8
章 ケーススタディ:
NASA
メタデータのマイニング
## # A tibble: 3,205,233 x 2
## id word
## <chr> <chr>
## 1 55942a57c63a7fe59b495a78 usgs
## 2 55942a57c63a7fe59b495a78 15
## 3 55942a57c63a7fe59b495a78 minute
## 4 55942a57c63a7fe59b495a78 stream
## 5 55942a57c63a7fe59b495a78 flow
## 6 55942a57c63a7fe59b495a78 data
## 7 55942a57c63a7fe59b495a78 kings
## 8 55942a57c63a7fe59b495a78
creek
## 9 55942a57c63a7fe59b495a78 konza
## 10 55942a57c63a7fe59b495a78 prairie
## # ... with 3,205,223 more rows
8.1.2
 初歩的な探索
NASA
データセットのタイトルで最もよく使われている単語は何でしょうか。
dplyr
count()
を使って調べることができます。
nasa_title %>%
count(word, sort = TRUE)
## # A tibble: 15,723 x 2
## word n
## <chr> <int>
## 1 project 7746 ...
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

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’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.
Head of Cybersecurity
QuotationMarkI 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.
Field Engineer
QuotationMarkI’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.
Data Platform Tech Lead
QuotationMarkI'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.
Mark W.
Embedded Software Engineer

You might also like

JavaScriptで学ぶ関数型プログラミング

JavaScriptで学ぶ関数型プログラミング

Michael Fogus, 和田 祐一郎
Rではじめるデータサイエンス

Rではじめるデータサイエンス

Hadley Wickham, Garrett Grolemund, 黒川 利明, 大橋 真也
データサイエンス講義

データサイエンス講義

Rachel Schutt, Cathy O'Neil, 瀬戸山 雅人, 石井 弓美子, 河内 崇, 河内 真理子, 古畠 敦, 木下 哲也, 竹田 正和, 佐藤 正士, 望月 啓充

Publisher Resources

ISBN: 9784873118307Other