> install.packages("dplyr")
below error message is throwing in case of package install . I am trying via R stdio and R console and from both cases faces this problem. Moreover i changed the glo...

These are the notes  for the second lecture in the unit on text processing. Some useful ideas  like exact string matching and the definitions of characters and  strings are covered in the notes of Natural Language Processing in R: Strings and Regular Expressions  Edit distance, also called Levenshtein distance,  is a measure of the number of primary edits that would need to be made  to transform one string into another. The R function adist() is used to  find the edit distance.adist("exactly the same","exactly the same") # edit distance 0 adist("exactly the same","totally different") # edit distance 14 A primary edit is one of three things:a) An insertion of a character. b) A deletion of a character. c) A substitution of a character. For example:## Insertions: All of these will return an edit distance of 1.adist("5678","05678") # inserting an '0' character before the '1'adist("weasel", "w easel")  # inserting a space between w and eadist("weasel", "weasel!")  # inserting a '!' character after the 'l'## Inserting…