udpipe (version 0.7)

dtm_remove_terms: Remove terms from a Document-Term-Matrix and keep only documents which have a least some terms

Description

Remove terms from a Document-Term-Matrix and keep only documents which have a least some terms

Usage

dtm_remove_terms(dtm, terms)

Arguments

dtm

an object returned by document_term_matrix or an object of class DocumentTermMatrix

terms

a character vector of terms which are in colnames(dtm) and which should be removed

Value

a sparse Matrix as returned by sparseMatrix or an object of class DocumentTermMatrix where the indicated terms are removed as well as documents with no terms whatsoever

Examples

# NOT RUN {
data(brussels_reviews_anno)
x <- subset(brussels_reviews_anno, xpos == "NN")
x <- x[, c("doc_id", "lemma")]
x <- document_term_frequencies(x)
dtm <- document_term_matrix(x)
dim(dtm)
dtm <- dtm_remove_terms(dtm, terms = c("appartement", "casa", "centrum", "ciudad"))
dim(dtm)
# }