用 inner join 搭配 Bing 詞典

R 情感分析

Ted Kwartler

Data Dude

資料表連接

連接的維恩圖

dplyr joins

inner_join(x, y, ...)
left_join(x, y, ...)
right_join(x, y, ...)
full_join(x, y, ...)
semi_join(x, y, ...)
anti_join(x, y, ...)

宣告參數 by：

inner_join(x, y, by = "shared_column")

或

inner_join(x, y, by = c("a" = "b"))

inner join 的維恩圖

inner_join(
  text_table,
  subjectivity_lexicon,
  by = "word_column"
)

anti join 的維恩圖

anti_join(
  text_table,
  stopwords_table,
  by = "word_column"
)

計數範例

R 情感分析