R 将两个由点连接的单词分开

我有一个包含新闻文章的大数据框。我注意到一些文章中有两个单词用点连接，如下示例所示

政府表示退出很重要。

。我将进行一些主题建模，所以我需要分离每个单词

这是我用来分隔这些单词的代码

    #String example
    test <- c("i need.to separate the words connected by dots. however, I need.to keep having the dots separating sentences")

    #Code to separate the words
    test <- do.call(paste, as.list(strsplit(test, "\\.")[[1]]))

   #This is what I get
  > test
  [1] "i need to separate the words connected by dots  however, I need to keep having the dots separating sentences"

最后一个音符

我的数据框架由17000篇文章组成；所有文本都是小写的。我只是举了一个小例子，说明我在试图分离两个由点连接的单词时遇到的问题。另外，有什么方法可以在列表中使用strsplit

strsplit

您可以使用

test <- c("i need.to separate the words connected by dots. however, I need.to keep having the dots separating sentences. Look at http://google.com for s.0.m.e more details.")
# Replace each dot that is in between word characters
gsub("\\b\\.\\b", " ", test, perl=TRUE)
# Replace each dot that is in between letters
gsub("(?<=\\p{L})\\.(?=\\p{L})", " ", test, perl=TRUE)
# Replace each dot that is in between word characters, but no in URLs
gsub("(?:ht|f)tps?://\\S*(*SKIP)(*F)|\\b\\.\\b", " ", test, perl=TRUE)

详细信息

    #String example
    test <- c("i need.to separate the words connected by dots. however, I need.to keep having the dots separating sentences")

    #Code to separate the words
    test <- do.call(paste, as.list(strsplit(test, "\\.")[[1]]))

   #This is what I get
  > test
  [1] "i need to separate the words connected by dots  however, I need to keep having the dots separating sentences"

• \b\.\b

  -用单词边界围起来的点（即
  之前和之后）不能是任何非单词字符，不能有字母、数字或下划线以外的任何字符

---

• （？Try
  gsub（“\\b\\.\\b”，”，test，perl=TRUE）
  。这将删除字母/数字/下划线之间的点。如果这不完全是您所需要的，您能否详细解释一下要删除点的上下文？它可以工作。我是否有可能在不修改URL的情况下应用此代码？我的数据框由不同的新闻文章组成，其中包含一些URL。我希望e保留它们，但此代码肯定会更改它们。请提供一个示例并更新问题。我将发布一个新问题，因为您已为我正确回答了此问题。谢谢！不，请不要，我将在此处发布答案。
  [1] "i need to separate the words connected by dots. however, I need to keep having the dots separating sentences. Look at http://google com for s 0 m e more details."
  [1] "i need to separate the words connected by dots. however, I need to keep having the dots separating sentences. Look at http://google com for s.0.m e more details."
  [1] "i need to separate the words connected by dots. however, I need to keep having the dots separating sentences. Look at http://google.com for s 0 m e more details."