Penn_Treebank_POS_tags
and Brown_POS_tags
provide,
respectively, the Penn Treebank POS tags
(https://catalog.ldc.upenn.edu/docs/LDC95T7/cl93.html, Table 2)
and the POS tags used for the Brown corpus
(https://en.wikipedia.org/wiki/Brown_Corpus),
both as data frames with the following variables:
- entry
a character vector with the POS tags
- description
a character vector with short descriptions of the
tags
- examples
a character vector with examples for the tags
Universal_POS_tags
provides the universal POS tagset introduced
by Slav Petrov, Dipanjan Das, and Ryan McDonald
(tools:::Rd_expr_doi("10.48550/arXiv.1104.2086")), as a data frame with character
variables entry
and description
.
Universal_POS_tags_map
is a named list of mappings from
language and treebank specific POS tagsets to the universal POS tags,
with elements named en-ptb and en-brown giving the
mappings, respectively, for the Penn Treebank and Brown POS tags.