Find most frequent terms in a document-term or term-document matrix, or a vector of term frequencies.
findMostFreqTerms(x, n = 6L, ...)
# S3 method for DocumentTermMatrix
findMostFreqTerms(x, n = 6L, INDEX = NULL, ...)
# S3 method for TermDocumentMatrix
findMostFreqTerms(x, n = 6L, INDEX = NULL, ...)For the document-term or term-document matrix methods, a list with the
named frequencies of the up to n most frequent terms occurring
in each document (group). Otherwise, a single such vector of most
frequent terms.
A DocumentTermMatrix or
TermDocumentMatrix, or a vector of term frequencies as
obtained by termFreq().
A single integer giving the maximal number of terms.
an object specifying a grouping of documents for rollup,
or NULL (default) in which case each document is considered
individually.
arguments to be passed to or from methods.
Only terms with positive frequencies are included in the results.
data("crude")
## Term frequencies:
tf <- termFreq(crude[[14L]])
findMostFreqTerms(tf)
## Document-term matrices:
dtm <- DocumentTermMatrix(crude)
## Most frequent terms for each document:
findMostFreqTerms(dtm)
## Most frequent terms for the first 10 the second 10 documents,
## respectively:
findMostFreqTerms(dtm, INDEX = rep(1 : 2, each = 10L))
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