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text2vec (version 0.3.0)
get_tf: Term-frequency scaling matrix
Description
This function creates a term-frequency (TF) scaling matrix from a document-term matrix.
Usage
get_tf(dtm, norm = c("l1", "l2"))
Arguments
dtm
a document-term matrix of class
dgCMatrix
or
dgTMatrix
.
norm
character
the method used to normalize term vectors.
"l1"
by default, i.e., scale by the number of words in the document.
Value
ddiMatrix
TF scaling diagonal sparse matrix.
See Also
get_idf
,
get_dtm
,
create_dtm