CombiTagger is an open source software intended for the development of combined taggers, independent of language and tag sets. The software, which is written in Java, was originally developed as an independent project of the MA students Verena Henrich and Timo Reuter at the University of Reykjavik under the guidance of Hrafn Loftsson, during the years 2008-2009.

USING CombiTagger

• CombiTagger is an open source software that can be downloaded here. Distributed with a GPL license.

About CombiTagger
CombiTagger can be used when the outcome of two or more classifiers need to be combined, for instance by voting. CombiTagger has for instance been used to combine the outcome of a particular number (n) of taggers so that the combined tagger returns one tag for each word, for instance the tag that receives the most votes amongst the other n taggers.

Hrafn Loftsson
Associate Professor
Reykjavík University, School of Computer Science
Menntavegi 1, 105 Reykjavík
Work phone: +354-5996227
Web Page:

Henrich, Verena, Timo Reuter and Hrafn Loftsson. 2009. CombiTagger: A System for Developing Combined Taggers. In Proceedings of the 22nd International FLAIRS Conference, Special Track: "Applied Natural Language Processing". Sanibel Island, Florida, USA. 2009 AAAI.

Loftsson, Hrafn Jokull H. Yngvason, Sigrun Helgadottir og Eirikur Rognvaldsson. 2010. Developing a PoS-tagged corpus using existing tools. In Proceedings of "Creation and use of basic lexical resources for less-resourced languages", workshop at the 7th International Conference on Language Resources and Evaluation, LREC 2010. Valetta, Malta.