In R tm package, build corpus FROM Document-Term-Matrix

Question

It\'s straightforward to build a document-term matrix from a corpus with the tm package. I\'d like to build a corpus from a document-term-matrix.

Let M be the numb

Answer 1

Here's on approach providing my own minimal reproducible example (as a new user you may not be aware that this is your responsibility) from the tm package:

## Minimal Reproducible Example
library(tm)
data("crude")
dtm <- DocumentTermMatrix(crude,
    control = list(weighting =
    function(x)
        weightTfIdf(x, normalize = FALSE),
        stopwords = TRUE))

## Convert tdm to a list of text
dtm2list <- apply(dtm, 1, function(x) {
    paste(rep(names(x), x), collapse=" ")
})

## convert to a Corpus
myCorp <- VCorpus(VectorSource(dtm2list))
inspect(myCorp)

## Stemming
myCorp <- tm_map(myCorp, stemDocument)
inspect(myCorp)