NAME

apertium-tagger — part-of-speech tagger and trainer for Apertium

SYNOPSIS

DESCRIPTION

apertium-tagger is the application responsible for the apertium part-of-speech tagger training or tagging, depending on the calling options. This command only reads from the standard input if the option --tagger or -g is used.

MODES

-g, --tagger

Tags input text by means of Viterbi algorithm.

-r n, --retrain n

Retrains the model with n additional Baum-Welch iterations (unsupervised). This option is incompatible with -u (--unigram)

-s n, --supervised n

Initializes parameters against a hand-tagged text (supervised) through the maximum likelihood estimate method, then performs n iterations of the Baum-Welch training algorithm (unsupervised). The CRP argument can be omitted only when n = 0.

-t n, --train n

Initializes parameters through Kupiec's method (unsupervised), then performs n iterations of the Baum-Welch training algorithm (unsupervised).

MODELS

-u, --unigram=MODEL

use unigram algorithm MODEL from <https://coltekin.net/cagri/papers/trmorph-tools.pdf>

-w, --sliding-window

use the Light Sliding Window algorithm

-x, --perceptron

use the averaged perceptron algorithm

OPTIONS

-d, --debug

Print error (if any) or debug messages while operating.

-e, --skip-on-error

Used with -xs to ignore certain types of errors with the training corpus

-f, --first

Used in conjunction with -g (--tagger) makes the tagger give all lexical forms of each word, with the chosen one in the first place (after the lemma)

-m, --mark

Mark disambiguated words.

-p, --show-superficial

Prints the superficial form of the word along side the lexical form in the output stream.

-z, --null-flush

Used in conjunction with -g (--tagger) to flush the output after getting each null character.

--help

Display a help message.

FILES

These are the kinds of files used with each option:

dictionary

Full expanded dictionary file

corpus

Training text corpus file

tagger_spec

Tagger specification file, in XML format

serialized_tagger

Tagger data file, built in the training and used while tagging

tagged_corpus

Hand-tagged text corpus

untagged_corpus

Untagged text corpus, morphological analysis of hand-tagged corpus to use both jointly with -s option

input

Input file, stdin by default

output

Output file, stdout by default

SEE ALSO

apertium(1), lt-comp(1), lt-expand(1), lt-proc(1)

COPYRIGHT

Copyright © 2005, 2006 Universitat d'Alacant / Universidad de Alicante. This is free software. You may redistribute copies of it under the terms of the GNU General Public License.

BUGS

Many... lurking in the dark and waiting for you!