R: Remove Sparse Terms from a Term-Document Matrix

removeSparseTerms {tm} | R Documentation

## Remove Sparse Terms from a Term-Document Matrix

### Description

Remove sparse terms from a document-term or term-document matrix.

### Usage

    removeSparseTerms(x, sparse)

### Arguments

`x` | A `DocumentTermMatrix` or a `TermDocumentMatrix`.
`sparse` | A numeric for the maximal allowed sparsity in the range from bigger zero to smaller one.

### Value

A term-document matrix where those terms from `x` are removed which have at least a `sparse` percentage of empty (i.e., terms occurring 0 times in a document) elements. I.e., the resulting matrix contains only terms with a sparse factor of less than `sparse`.

### Examples

    data("crude")
    tdm <- TermDocumentMatrix(crude)
    removeSparseTerms(tdm, 0.2)

[Package tm version 0.7-1 Index]