combine_terms: combine_terms
In R.temis: Integrated Text Mining Solution

Description Usage Arguments Details Value Examples

Aggregate terms in a document-term matrix to according to groupings specified by a dictionary.

1	combine_terms(dtm, dict)

`dtm`	A `DocumentTermMatrix` object.
`dict`	A `data.frame` with one row per term in `dtm` that should be retained. The row names must match names of rows in `dtm`, and the first column must give the term into which it should be transformed.

If several terms use the same transformation, they will be aggregated together. Terms missing from dict will be dropped.

An aggregated DocumentTermMatrix object.

file <- system.file("texts", "reut21578-factiva.xml", package="tm.plugin.factiva")
corpus <- import_corpus(file, "factiva", language="en")
dtm <- build_dtm(corpus)
dict <- dictionary(dtm)
combine_terms(dtm, dict)