Compute the sparsity of a document-feature matrix

Source: R/dfm-methods.R

Return the proportion of sparseness of a document-feature matrix, equal to the proportion of cells that have zero counts.

sparsity(x)

Arguments

x

the document-feature matrix

Examples

dfmat <- dfm(data_corpus_inaugural)
#> Warning: 'dfm.corpus()' is deprecated. Use 'tokens()' first.
sparsity(dfmat)
#> [1] 0.9183823
sparsity(dfm_trim(dfmat, min_termfreq = 5))
#> [1] 0.7850806