Description Usage Arguments Value Examples
This function transforms a text corpus such as the result of
cleanTexts
into the form needed by the lda
-package.
1 |
text |
A list of tokenized texts |
vocab |
A character vector containing all words which should beused for lda |
reduce |
Logical: Should empty texts be deleted? |
A list in which every entry contains a matrix with two rows: The
first row gives the number of the entry of the word in vocab
minus
one, the second row is 1 and the number of the
occurrence of the word will be shown by the number of columns belonging to
this word.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | texts <- list(A="Give a Man a Fish, and You Feed Him for a Day.
Teach a Man To Fish, and You Feed Him for a Lifetime",
B="So Long, and Thanks for All the Fish",
C="A very able manipulative mathematician, Fisher enjoys a real mastery
in evaluating complicated multiple integrals.")
corpus <- textmeta(meta=data.frame(id=c("A", "B", "C", "D"),
title=c("Fishing", "Don't panic!", "Sir Ronald", "Berlin"),
date=c("1885-01-02", "1979-03-04", "1951-05-06", "1967-06-02"),
additionalVariable=1:4, stringsAsFactors=FALSE), text=texts)
corpus <- cleanTexts(corpus)
wordlist <- makeWordlist(corpus$text)
LDAprep(text=corpus$text, vocab=wordlist$words, reduce = TRUE)
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.