quanteda: phrase – R documentation

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phrase

Declare a compound character to be a sequence of separate pattern matches

Description

Declares that a whitespace-separated expression consists of multiple patterns, separated by whitespace. This is typically used as a wrapper around pattern() to make it explicit that the pattern elements are to be used for matches to multi-word sequences, rather than individual, unordered matches to single words.

Usage

phrase(x)

is.phrase(x)

Arguments

`x`	the sequence, as a `character` object containing whitespace separating the patterns

Value

phrase returns a specially classed list whose white-spaced elements have been parsed into separate character elements.

is.phrase returns TRUE if the object was created by phrase(); FALSE otherwise.

Examples

# make phrases from characters
phrase(c("a b", "c d e", "f"))

# from a dictionary
phrase(dictionary(list(catone = c("a b"), cattwo = "c d e", catthree = "f")))

quanteda

Quantitative Analysis of Textual Data

v3.0.0

GPL-3

Authors

Kenneth Benoit [cre, aut, cph] (<https://orcid.org/0000-0002-0797-564X>), Kohei Watanabe [aut] (<https://orcid.org/0000-0001-6519-5265>), Haiyan Wang [aut] (<https://orcid.org/0000-0003-4992-4311>), Paul Nulty [aut] (<https://orcid.org/0000-0002-7214-4666>), Adam Obeng [aut] (<https://orcid.org/0000-0002-2906-4775>), Stefan Müller [aut] (<https://orcid.org/0000-0002-6315-4125>), Akitaka Matsuo [aut] (<https://orcid.org/0000-0002-3323-6330>), William Lowe [aut] (<https://orcid.org/0000-0002-1549-6163>), Christian Müller [ctb], European Research Council [fnd] (ERC-2011-StG 283794-QUANTESS)

Initial release