R: Term Frequency - Inverse Document Frequency calculation

dtm_tfidf {udpipe} | R Documentation

## Term Frequency - Inverse Document Frequency calculation

### Description

Term Frequency - Inverse Document Frequency calculation. Averaged by each term.

### Usage

    dtm_tfidf(dtm)

### Arguments

`dtm` | an object returned by `document_term_matrix`

### Value

a vector with tfidf values, one for each term in the `dtm` matrix

### Examples

    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)

    ## Calculate tfidf
    tfidf <- dtm_tfidf(dtm)
    hist(tfidf, breaks = "scott")
    head(sort(tfidf, decreasing = TRUE))
    head(sort(tfidf, decreasing = FALSE))

[Package udpipe version 0.8.8 Index]