Resources for Greek

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  • Southeast European Times (sentence aligned corpus, Albanian, Bulgarian, English, Greek, Macedonian, Romanian, Serbo-Croatian, Turkish — approximately 4.5 million words per language)

Machine translation systems

Free software


Named entity recognition


Natural language generation


  • NaturalOWL (version 1.1) Generates Greek and English descriptions of entities and classes from OWL ontologies that have been annotated with linguistic and user modeling resources in RDF. It can also be used as a Protégé plug-in. See sbobet for publications describing NaturalOWL. (GPL)

Part-of-speech (POS) tagging


  • Greek POS tagger Attempts to automatically determine the part of speech (e.g., noun, adjective, verb, etc.) of each word occurrence in Greek texts. It can also tag (with lower accuracy) each word occurrence with additional information, such as the gender, number, and case of each noun, the voice, tense, and number of each verb etc. (GPL)


  • D. Galanis and I. Androutsopoulos, "Generating Multilingual Descriptions from Linguistically Annotated OWL Ontologies: the NaturalOWL System". In Proceedings of the 11th European Workshop on Natural Language Generation (ENLG 2007), Schloss Dagstuhl, Germany, pp. 143-146, 2007.
  • G. Lucarelli and I. Androutsopoulos, "A Greek Named-Entity Recognizer that Uses Support Vector Machines and Active Learning". In Proceedings of the 4th Hellenic Conference on Artificial Intelligence (SETN 2006), Heraklion, Greece, 2006.
  • G. Lucarelli, X. Vasilakos and I. Androutsopoulos, "Named Entity Recognition in Greek Texts with an Ensemble of SVMs and Active Learning". International Journal on Artificial Intelligence Tools, 16(6):1015-1045, World Scientific, 2007.
  • G. Petasis, V. Karkaletsis, D. Farmakiotou, G. Samaritakis, I. Androutsopoulos, C. D. Spyropoulos, "A Greek Morphological Lexicon and its Exploitation by a Greek Controlled Language Checker". In Proceedings of the 8th Panhellenic Conference on Informatics, 8 - 10 November 2001, Nicosia, Cyprus.
  • G. Petasis, G. Paliouras, V. Karkaletsis, C.D. Spyropoulos and I. Androutsopoulos, "Resolving Part-of-Speech Ambiguity in the Greek Language Using Learning Techniques". In Fakotakis, N. et al. (Eds.), Machine Learning in Human Language Technology (Proceedings of the ACAI Workshop), pp. 29-34, Chania, Greece, 1999.

External links