Remove sparse terms from a document-term or term-document matrix.
A numeric for the maximal allowed sparsity in the range from bigger zero to smaller one.
A term-document matrix where those terms from
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
1 2 3
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