tokens_chunk {quanteda}

Segment tokens object by chunks of a given size

Description

Segment tokens into new documents of equally sized token lengths, with the possibility of overlapping the chunks.

Usage

tokens_chunk(x, size, overlap = 0, use_docvars = TRUE)

Arguments

x

tokens object whose token elements will be segmented into chunks

size

integer; the token length of the chunks

overlap

integer; the number of tokens in a chunk to be taken from the last overlap tokens from the preceding chunk

use_docvars

if TRUE, repeat the docvar values for each chunk; if FALSE, drop the docvars in the chunked tokens

Value

A tokens object whose documents have been split into chunks of length size.

See Also

tokens_segment()

Examples

txts <- c(doc1 = "Fellow citizens, I am again called upon by the voice of
                  my country to execute the functions of its Chief Magistrate.",
          doc2 = "When the occasion proper for it shall arrive, I shall
                  endeavor to express the high sense I entertain of this
                  distinguished honor.")
toks <- tokens(txts)
tokens_chunk(toks, size = 5)
tokens_chunk(toks, size = 5, overlap = 4)