udpipe: unique_identifier – R documentation

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unique_identifier

Create a unique identifier for each combination of fields in a data frame

Description

Create a unique identifier for each combination of fields in a data frame. This unique identifier is unique for each combination of the elements of the fields. The generated identifier is like a primary key or a secondary key on a table. This is just a small wrapper around frank

Usage

unique_identifier(x, fields, start_from = 1L)

Arguments

`x`	a data.frame
`fields`	a character vector of columns from `x`
`start_from`	integer number indicating to start from that number onwards

Value

an integer vector of the same length as the number of rows in x containing the unique identifier

Examples

data(brussels_reviews_anno)
x <- brussels_reviews_anno
x$doc_sent_id <- unique_identifier(x, fields = c("doc_id", "sentence_id"))
head(x, 15)
range(x$doc_sent_id)
x$doc_sent_id <- unique_identifier(x, fields = c("doc_id", "sentence_id"), start_from = 10)
head(x, 15)
range(x$doc_sent_id)

udpipe

Tokenization, Parts of Speech Tagging, Lemmatization and Dependency Parsing with the 'UDPipe' 'NLP' Toolkit

v0.8.5

MPL-2.0

Authors

Jan Wijffels [aut, cre, cph], BNOSAC [cph], Institute of Formal and Applied Linguistics, Faculty of Mathematics and Physics, Charles University in Prague, Czech Republic [cph], Milan Straka [ctb, cph], Jana Straková [ctb, cph]

Initial release