quanteda (version 0.99)

stopwords: access built-in stopwords

Description

This function retrieves stopwords from the type specified in the kind argument and returns the stopword list as a character vector. The default is English.

Usage

stopwords(kind = quanteda_options("language_stopwords"))

Arguments

kind

The pre-set kind of stopwords (as a character string). Allowed values are english, SMART, danish, french, greek, hungarian, norwegian, russian, swedish, catalan, dutch, finnish, german, italian, portuguese, spanish, arabic.

Value

a character vector of stopwords

A note of caution

Stop words are an arbitrary choice imposed by the user, and accessing a pre-defined list of words to ignore does not mean that it will perfectly fit your needs. You are strongly encourged to inspect the list and to make sure it fits your particular requirements.

Details

The stopword list is an internal data object named data_char_stopwords, which consists of English stopwords from the SMART information retrieval system (obtained from Lewis et. al. (2004) and a set of stopword lists from the Snowball stemmer project in different languages (see http://snowballstem.org/projects.html). See data_char_stopwords for details.

Examples

# NOT RUN {
head(stopwords("english"))
head(stopwords("italian"))
head(stopwords("arabic"))
head(stopwords("SMART"))

# adding to the built-in stopword list
toks <- tokens("The judge will sentence Mr. Adams to nine years in prison", remove_punct = TRUE)
tokens_remove(toks, c(stopwords("english"), "will", "mr", "nine"))
# }