RippleTagger

RippleTagger identifies part-of-speech tags (Nouns, Verbs, and so on...). You give it a sentence, it gives you a list of tags back. Tagging is the first step in many language processing tasks.

Example usage

>>> from rippletagger.tagger import Tagger
>>> tagger = Tagger(language="en")
>>> print tagger.tag(u"The quick brown fox jumps over the lazy dog .")

[
    (u'The', u'DET'),
    (u'quick', u'ADJ'),
    (u'brown', u'ADJ'),
    (u'fox', u'NOUN'),
    (u'jumps', u'VERB'),
    (u'over', u'ADP'),
    (u'the', u'DET'),
    (u'lazy', u'ADJ'),
    (u'dog', u'NOUN'),
    (u'.', u'PUNCT'),
]

Why should you use RippleTagger?

• It's fast.

• It has good accuracy.

• It supports 40 (!) languages out of the box.

Installation

pip install rippletagger

Develop locally and run the tests

git clone git@github.com:EmilStenstrom/rippletagger.git
cd rippletagger
python setup.py test

Supported languages

You can use either the 2-letter code, 3-letter code or language name as the parameter to Tagger. In some cases there are more than one treebank available for a language. In that case you can choose which treebank you want to use by appending "-2", "-3" and so on to the language code.

Technical details

RippleTagger is a slimmed down version of RDRPOSTagger.

The general architecture and experimental results of RDRPOSTagger can be found in our following papers:

• Dat Quoc Nguyen, Dai Quoc Nguyen, Dang Duc Pham and Son Bao Pham. RDRPOSTagger: A Ripple Down Rules-based Part-Of-Speech Tagger. In Proceedings of the Demonstrations at the 14th Conference of the European Chapter of the Association for Computational Linguistics, EACL 2014, pp. 17-20, 2014. [.PDF] [.bib]

• Dat Quoc Nguyen, Dai Quoc Nguyen, Dang Duc Pham and Son Bao Pham. A Robust Transformation-Based Learning Approach Using Ripple Down Rules for Part-Of-Speech Tagging. AI Communications (AICom), vol. 29, no. 3, pp. 409-422, 2016. [.PDF] [.bib]

Citations

Please cite either the EACL or the AICom paper whenever RDRPOSTagger is used to produce published results or incorporated into other software.

RDRPOSTagger is also available to download (10MB .zip file) at: https://sourceforge.net/projects/rdrpostagger/files/RDRPOSTagger_v1.2.2.zip

Find the full usage of RDRPOSTagger at its website: http://rdrpostagger.sourceforge.net/