This works, but is no longer maintained. Please see the original project for the latest updates: https://github.com/datquocnguyen/RDRPOSTagger

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'),
]

You can read about what the different tags mean at the Universial Dependencies project.

Why should you use RippleTagger?

• It supports 40 (!) languages out of the box.
• It's fast.
• It has good accuracy.
• It has no dependences and is pure python.

Installation

pip install rippletagger

Develop locally and run the tests

git clone [email protected]: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.