Get or measure the set of types (unique token values).
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a text or character vector.
a logical value indicating whether to collapse the aggregation over all rows of the input.
additional properties to set on the text filter.
text_ntype counts the number of unique types in each text;
text_types returns the set of unique types, as a character
vector. Types are determined according to the
collapse = FALSE, then
text_ntype produces a numeric
vector with the same length and names as the input text, with the elements
giving the number of units in the corresponding texts. For
text_types, the result is a list of character vector with each
vector giving the unique types in the corresponding text, ordered
according to the
collapse = TRUE, then we aggregate over all rows of the input.
In this case,
text_ntype produces a scalar indicating the number
of unique types in
text_types produces a character
vector with the unique types.
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text <- c("I saw Mr. Jones today.", "Split across\na line.", "What. Are. You. Doing????", "She asked 'do you really mean that?' and I said 'yes.'") # count the number of unique types text_ntype(text) text_ntype(text, collapse = TRUE) # get the type sets text_types(text) text_types(text, collapse = TRUE)
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