Remove terms from a document-term matrix
This function removes very common and very uncommon words from a document-term matrix.
transform_filter_commons(dtm, term_freq = c(uncommon = 0.001, common = 0.975))
- a document-term matrix of class
numericvector of 2 values in between
1. The first element corresponds to frequency of uncommon words; the second element corresponds to the frequency of common words. Terms which are observed less than first value or frequency or more than second will be filtered out.
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