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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
6.2
 例:図書館荒らし
115
## 3 Great Expectations_17 biddy 63
## 4 Great Expectations_27 joe 58
## 5 Great Expectations_38 estella 58
## 6 Great Expectations_2 joe 56
## 7 Great Expectations_23 pocket 53
## 8 Great Expectations_15 joe 50
## 9 Great Expectations_18 joe 50
## 10 The War of the Worlds_16 brother 50
## # ... with 104,711 more rows
6.2.1
 章を対象とする
LDA
word_counts
は、
1
1
が、
topicmodels
DocumentTermMatrix
です。そこで、「5.2 整理データの行列へのキャスト」で説明し
たように、
tidytext
cast_dtm()
を使って
1
1
トークンの表を
DocumentTermMatrix
にキャストします。
chapters_dtm <- word_counts %>%
cast_dtm(document, word, n)
chapters_dtm ...
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Publisher Resources

ISBN: 9784873118307Other