calc_idf {qtkit} | R Documentation |
Calculate Inverse Document Frequency
Description
Computes the inverse document frequency (IDF) for each term in a term-document matrix. IDF is calculated as log(N/df) where N is the total number of documents and df is the document frequency of the term.
Usage
calc_idf(tdm)
Arguments
tdm |
A term-document matrix |
Value
A numeric vector of inverse document frequencies for each term
[Package qtkit version 1.1.1 Index]